351w efi high idle. I hope someone out there has a solution for me.

351w efi high idle but at the correct timing at idle, the vacuum was only like 11lbs Oct 1, 2008 · 1987 - 1996 F150 & Larger F-Series Trucks - Surging Idle 1989 F250 - Hello guys, first post here and man do I hope there are some backyard mechanics on this board who know how to turn wrenches! I have a 1989 F250 XLT 351W (EFI) 5 spd manual 4X4. After driving (from a cold start) for about 20 -25 minutes with the Jun 10, 2003 · EFI 351w running way rich. 1988 5. When I I have the same symptoms with my 89 351W. It ran like absolute crap when I got it I've got the auto choke adjusted and working properly, the truck will cold start and idle now, and finally drives Jan 23, 2003 · 1978 - 1996 Big Bronco - Adjust idle on 92 351 EFI ( how To?) - Can anyone please tell me how to adjust (lower) the idle speed on my 92 Bronco 351W EFI motor? Thanks, Dale 92 Bronco 351W EFI 71 F100 360. M. Aug 10, 2020 · Hi everyone, I am very new to the Fitech systems I have a EFI GO 600 with PA on a slightly modified Pontiac 400. When I unplug the wire connector to the Idle Air Control valve, it idles down correctly, but runs rich. I just recently purchased a 89 f250 5. Dec 13, 2023 · After doing some research, where the issue is not a leaking plenum gasket or any of the above mentioned vacuum fittings, the culprit is usually the IAC, the EGR Valve, or a major leak in the brake booster, cruise Jan 21, 2010 · High is usually caused by vacuum leaks. Apr 19, 2020 · 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - Setting timing on 351 Windsor - I've been messing with my truck for a while and having carb issues but I just got a new carb on and found out the timing is still slightly off. I built a frame off 1977 Bronco and added a 351w efi with all new When the pump is shut off it holds the 32psi for quite some time but unsure as to why I am not getting any higher pressure. 3 posts • Page 1 of 1. G. 5efi should go to high idle of about 1100 rpm at first Log In; Register; Forums. Speedway Motors doesn’t sell cheap Small Block Ford 351W EFI intake manifolds, we focus on providing Small Block Ford 351W high rise intake manifolds that fit your budget, without sacrificing on quality. SVT actually used a “marine” 351W with a flat-tappet cam because they liked its power and torque curves more. Add to quote #1 · Nov 6, 2005. Nov 10, 2024 · I am a newbie to this forum but I am a long term boater and engine buff. Very steady idle Here after about 10 minuets of running (temp gauge broken fwi) 69 Convertible, 351W, T5, E-Brock Performer 351-W intake, Performer Plus cam, Holley 4160, power assist, dual exhaust, 4-wheel manual drums. Advanced Search. I just rebuilt the carb (Autolite 2150), it has a new cap, rotor, wires, and plugs and still stings my eyes and smokes when Dec 31, 2012 · I am wondering if my 96 F250 with the 7. If you don't have a vacuum gauge, place a glass of water on the cowl, and set the timing where the water is smoothest. Apr 8, 2010 · Small Block V8 (221, 260, 289, 5. Not every time but more ofter when the engine is cold. It is not used regularly, mostly for plowing in the winter and hauling feed and horses a couple times of month in the summer. 8L 351w. Primary rig is Sep 18, 2022 · I've got myself a 1995 E350 Econoline with a stock EFI 351w that behaves as if it has a gigantic vacuum leak in it that we can't find for the life of us. 8/351W) - 92 302 EFI high idle after gear engagement - Hey all, I have my rebuilt 92 F-150 5. 8L, Desolate Stage 1. I recently purchased a 21’ four wins (1991). It came with a blown OMC 302, 2bll and a cobra drive. 0 efi high idle. Post by Barnstang » Thu Nov 10, 2005 2:17 am. Anyway after Great Frustration I changed out the IACV and the throttle position sensor, and it ran great!! 750-850grand at idle. Sep 3, 2015 · At idle and in drive it sits alittle under 25 psi but when i raise rpms it rises and then falls back down to 25 or under some i hear a ticking aswell thanks in advanced . Hot in park it shows around 10 to 15. When throttle is suddenly released, the needle will snap back up to a higher than normal figure. Thanks. 8l 351W Rough/high idle wont go away plz help!!!!! - i have changed the map sensor, TPS sensor and set it to 0. I'm not too familiar with timing and I'm not sure what to set it to. No tach so don't know exactly how high, I know my truck with a 351w idles up to about 1200 at start up and drops back down when its warm. Idle To 6800 RPM; Race Use Only. It does not do it all the time and only when driving in gear it rev up to 1500-2000RPM. Advancing throttle reduced the hunting; it disappeared at about 900, but the engine was noisy. 8 High Idle- Not your normal problem. Intake Manifold Lower; Rear Height: 10. Small Base Circle, Rattler, Choppy idle, high performance street, stock converter ok, best with 1800+ and gears. Reducing throttle brought it back. How did you check all the vacuum lines? I have the only reliable method is to use a handheld vacuum pump/gauge. 8 liter, 4x4. bigblueford. Then when the engine is hot, turn the engine off, and then start it again. Barnstang New Member Posts: 4 Joined: Thu Nov 10, 2005 2:11 am Location: Hagerstown,MD. 1 post • Page 1 of 1. Reply Dec 20, 2006 · I'm trying to ballpark an initial timing for my 351w with AFR185'3, 9. Then you back down the idle screw on the throttle linkage to the desired engine idle RPM. I want to know how to adjust it properly so that Mar 27, 2013 · (Sniper EFI High Idle Thread) 8) The idle speed screw/IAC Position relationship should be done in neutral and at hot idle. it has a misfire anytime under load May 13, 2023 · Hi Guys, I have a 351W that was built in the mid 90's. I cleaned the IAC. The engine is a 351w, no modifications. 2K views 2 replies 3 participants last post by macx Sep 23, 2005. 55 Gears. History: The cat was hogged out by previous owner (it is empty). whenever i start it, it will rev and then cut out and almost stall and then rev again continuously. The engine is a 468ci big-block with a mild hydraulic roller cam, a TH400, a warmed-over converter, and 3. I issues with high compression and 87 upper manifold over the #3822. One problem: The 351W in it has about 5 lbs of oil pressure hot and in gear at idle. I REALLY need some help. 8/351W) - High Idle on 1987 302. Thread Tools. You may be able to just Jun 10, 2003 · Buddy of mine has a 94 f150, its got an EFI 351 thats running crazy rich. In the past, I have done minor upgrades such as roller rockers and a pair of Ford Racing hi-flow shorty headers and true-dual H-pipe range more so than horsepower at the top end (although I want plenty of both) I also want a cam that "really talks" at idle and under Jan 20, 2020 · Here is idle 2 minuets after cold start. Test each vacuum Apr 12, 2019 · I'm having some issues with the 351w in my 1994 E-150 Clubwagon E4OD and I’m looking for some advice on how to fix them. Just putting around near idle it vibrates more than it should for sure, but it is less intense. The 4 wire Stepper motor is disabled until I have the basics working, bi-pass port is taped off on the throttle body. 9L L6 - High Idle - Vacuum Leak? - Hello, I've read dozens of threads which attempt to troubleshoot 4. 8/351W) - 351W high idle low speed - 1988 F250 351w efi Hello all, been dicking around with this old truck for a while now. $264. CC Member : Join Date: Dec 2011. When you start it in the mornings, the idle will shoot to 2,000 RPM or so for about 30 seconds, then back down. Jan 2, 2004 · 1987 - 1996 F150 & Larger F-Series Trucks - Surging Idle - I have a '93 F150 w/ 5. 560/. I have a fresh built Windsor (351) with an 'E' cam and full Sniper-Hyperspark system. 8/351W) - Next problem, rough idle, hard start, 351w efi - I'm working out the sludge issues, which I think was just bad crankcase venting, old cheap it idles higher, plug it, it idles like it did before. After considerable tuning I have set the idle at 14. Sep 18, 2009 · 1996 351W EFI rebuild @ the machine shop. I know enough not to just throw a part at it w/o asking first. 0 for my ford motorsport 302, 345 hp. Jump to Latest I'm planning an all aluminum 351W build, aiming for at least 500hp and a good broad torque curve. Jun 14, 2018 · High idle, runs in park stalls in gear replaced tps,iac, verified trans filter;installed clip, cleaned vss and mlps engine is a 351w, originally 302 (unsure of pcm matches) was told by PO that the computer needed reflash for 351w Normal Engine Vacuum at Nov 20, 2021 · Holly sniper EFI. aluminum heads/intake, This is how I have mine setup and the biggest issue I have is with the IAC surging randomly causing a high idle. Was running and driving great when I bought it, I drove it about an hour back to my house. 8 EFI engine for about a week. When I bring down to neutral my idle stays at or slightly above 1,000 rpms. Get the Best Performance with ATK Engines High Performance Crate Engine Small Block Ford 351W / 390HP / 420TQ HP11C-EFI parts at JEGS. Is there a way to Feb 16, 2021 · Hi friends. 8/351W) - High idle 351w - I have a 94' f150 with a 351w and intermittently it will have a high idle (1000-2000rpm's) it will do it at start up and after cruising, could a vacuum leak cause this? any info would be nice, thanks in advance. 11 rear, 363 RWHP Ride Along Video! That high load could be a hard stomp from idle. , but my idle speed will pretty much match up with whatever I set my Aug 20, 2023 · Similar Threads - Rough Idle Forum Date; Hunting Idle on Hot Start: 1987 - 1991 Ford F150, F250 and F350 Truck Forum: May 30, 2019: 1990 Ford F250 5. Jump to Latest 5. kmg36 New Member Posts: 1 Joined: Mon Mar 09, 2009 10:39 pm. The runner length and tapered cross section design will perform well for a wide range of engine combinations. Anyway, I picked up a '79 Thunderbird pretty cheap. 8/351W) - 351W running rich - i have a '77 351W from an econline van that i recently put in my truck. fuel trim) while you're trying to change the timing and that can whack out your readings. It just started happening. After setting the parameters in the FAST EZ EFI the engine started quickly. the idle jumps from about 700-1000 kinda sounds like it has a big cam. 1987 - 1996 F150 & Larger F-Series Trucks. The only thing is the neutral safety switch is out, so I have to start it by jumping the solenoid under the hood. For about three months now, it's been idling high. In the mid 80's when EFI was still in Jun 23, 2020 · I just installed a 600 system on a stock 351w in a docile bronco. if i drive it around it will also settle to 1100 rpm instead of 700ish. Keep in mind that I gathered almost all of this information from places on the internet and none of it is personal experience because I don’t have any. 0 Reply. the engine cold idles at around 1400 rpm and warm idles at 1800 rpm. B. 54/3. ? - Can anyone tell me how to adjust (lower) the idle on my 92 Bronco 351W EFI motor? If you're idle is too high, you have other problems. The IAC (or idle air control motor) Jan 2, 2005 · 1987 - 1996 F150 & Larger F-Series Trucks - '95 F250 5. A vacuum leak would cause a Ford SB 351W 1969-1996 Adv. I got it for a excellent deal and his pretty much finished all the work for state inspection. Log In; Register; Forums. Not too bad when cold but very high (probably 1200 rpm) when warm. 4, cruise at 14. We won't be swayed by popular 351W parts, they need to be cost effective. Turn the distributer until you get the highest vacuum reading. 8/351W) - 1990 5. Sometimes coming off idle i get a backfire through the carb. Just make sure your final all-in timing doesn't exceed 40*. Mar 26, 2020 · This is going to be a little long winded so bear with me, but I wanted to provide as much info as I could. a month or so ago, i rebuilt the autolite 2 barrel on it, (from a 62 352), and after that, it ran great. much volume for a decent vacuum at idle. I can hold the gas and engine at 2000 rpm. Im a fleet tech. Normal humidity here is 35%. Cab, Manual 4x4, 302 EFI, Manual 5 speed. 99V like the Haynes book says, i also changed the fuel vapor purge valve, idle position sensor,pcv valve, EGR valve, EGR solenoid, o2 sensor. Apr 18, 2021 · So I put a traditional tach on it to see if the problem was the efi or the ignition, and it was definitely not jumping around like the fitech's tach. Also ensure this isn't tuning related. On the Base Fuel Table, the "in gear" idle area is just Intake Manifold, Super Victor EFI, Aluminum, Multi-Port, Fits 9. The van has a high idle but not all the time. 0L high idle?? - I put a 5. 8 EFI 4X4 about 89,000 miles. When I got the truck it Aug 14, 2020 · 1987 - 1996 F150 & Larger F-Series Trucks - 1990 F250 351w rough idle and high RPM misfire - hello, new here but this old truck just doesnt like me. Great daily usage, smooth idle, Jan 25, 2017 · You open the idle adjustment screw (ccw) and it still idles way too high or with my EFI, that IAC position stays at 0. My 351 started idling at 2500 rpm last August. Save Share Oct 17, 2019 · Thanks for that info. 7 posts • Page 1 of 1. can't get it to idle under 900 RPM. Fully electronic multi port EFI engine. when im driving it stumbles unless im accelerating. 6K views 3 replies 0 participants last post by Richard Powers Nov 16, 2005. Jump to Latest 1. Setting correct idle speed on 351w. With my idle screw cranked all the way up (highest idle) the lowest I can IAC Position is around 20%. FiTech users frequently report idle control issues, which include rough idling, surging, or stalling. The engine has been completely rebuilt. I had put new plugs, points, wires, distributor cap and rotor about a month ago. EFI 5. I used to run an 850 Holley. 5 in. Dec 1, 1998 · We build up a Ford 351W small block with a factory EFI system. Computer Malfunction. If it seems to struggle a bit, it's too much Jan 12, 2007 · Ford Inline Six, 200, 250, 4. I have full set at 35 at 2500 RPMs. Also if the engine is warm sometimes when Aug 30, 2000 · Small Block V8 (221, 260, 289, 5. to reset it I put it in park and shut the truck off brings it back down till the next time. Oct 9, 2022 · Hi All. Change the oil and oil filter again at 1,000 miles. 8L 351 stock. 0L from 1990 Crown Vic in my 1950 F1, deleted the TAB, TAD, charcol canister and all AC, Cruise etc. It feels like there is a problem with the idle air. I will be checking the fuel pressure tomorrow at the rail. That's NOT the behavior of a vacuum leak; large or small. I recently went through a high idle problem, the warmer the engine got the higher the rpm's went!! Two grand and rising. I tweaked a whole bunch of other parameters - Startup Enrichment, After Start Hold Off, Coolant Temperature Enrichment, Idle Ramp Speed Decay, etc. 480/. when my truck is idleing it will start to idle super fast to fast to put in gear. hotrod. - My dad has a 1987 F-150 with a rebuilt 302 EFI in it. 5 Lift, Expect 40 plus or minus at higher revs. High timing can cover a different issue you need to find, and idle timing is less Jan 10, 2010 · Having a high idle problem with my 1989 Bonco (stock 351W, C-6 trans). Ford 351 windsor engine diagram. I put more faith in the EFI book than haynes so I picked up another. Unknown member Discussion starter. Ford Mar 19, 2017 · 1987 - 1996 F150 - 1988 Ford F150 Idle Problems - I have a 1988 Ford f150 5. 8l fast idle, replaced everything! - hi i just finished installing a junkyard 5. 351 windsor 351c cubic inch onallcylinders distinct displacement351 diagram cleveland ford engine exploded 351c drawing order firing drawings Apr 19, 2013 · 1978 - 1996 Big Bronco - Setting idle 96' 351 - I've been searching around on all the forums and using all the keywords I can think of, but I still can't find the thread. but the really weird thing was that Ford 351W (393 Stroker) “Test run” A quick test run on the engine stand ensured all systems were worked. Combined, this gives you the most advanced multi-port EFI system available. I Oct 19, 2016 · 1987 - 1996 F150 & Larger F-Series Trucks - EFI 302 High Idle after warm-up - Been a while since I've been on, hope everyone is well. The engineering team also redesigned the water crossover passage to allow Nov 22, 2009 · I'm setting up a new FAST EZ EFI on my 350HO crate motor and I'd like to get some advice on what the target air / fuel ratios should be for idle, cruise and WOT. Best 351W mods. The engine is a stock 93 mustang with stock MAF, TB, etc. A block of part-throttle. Manual transmission. Some think this engine was the same as the F150 Lightning, but that is not correct. It fires right up like id expect it but after that it idles high and dies if Sep 11, 2011 · The other day i parked my F150(302 EFI), and went to start it up about 3-4 hrs later and it was running like crap. 473 posts · Joined 2007 Add to quote; Only show this user #4 · Jan Oct 2, 2017 · Small Block V8 (221, 260, 289, 5. I've had my 1989 Bronco with the 5. Joined Sep 23, 2006 Oct 18, 2014 · 1980-'96 Bronco Tech. If you have seen my previous threads, you know it's been an adventure. Climbed the Feb 28, 2015 · 1987 - 1996 F150 & Larger F-Series Trucks - New 351w running rich and bad idle - Hello, The harness from my truck was falling apart and I fought high idle problems previously with the 302. Apr 20, 2010 · Fixed '88 F150 High Idle fixed. Quantity. Choke: after you have the base idle set and working OK, you can adjust the choke high idle. 8. Idle issues: 1987 - 1991 Ford F150, F250 and F350 Truck Forum: May 26, 2018 Nov 2, 2002 · This is my 3rd 351W and it was straight forward, nothing real special. unclethumbtack. 25 in. the engine runs great as well as tranny other than Mar 17, 2024 · '89 351w EFI, rough idle then stall. Jan 3, 2004 · All right heres the deal I have a 80bronco that I took the 302 out of and put a reman 351w into with a performer intake and a holley car. When the IAC (idle air control) motor is disconnected from its vacuum port, it may leak the vacuum and cause an increase in idle speed. 400+ HP EFI 351W, C6 Swap '96: 5. Idle: This van has a history of a high idle. Sep 28, 2006 · The choke is wide open and because of the black smoke at idle, I am thinking I've got a flooding problem. 5 roadster (MK IV body retrofit to MK III chassis) 351W stroked & poked to 396 c. i. I am using the original style autolite 4100 series maybe need to upgrade? i tried to adjust the mixer screw by turning them all the way in then out 1 1/2 turn but had to turn out 2 full Sep 28, 2018 · 8 stack EFI. Overview Aug 13, 2002 · Small Block V8 (221, 260, 289, 5. 400 hp and 450 lb-ft with factory EFI and 87-octane gas. I've been having an issue with my truck lately where if I timed it around 6-8 degrees BTDC at idle it would idle OK, but not cough Did Ford make any 351W enginges with #1 on the driver's time the motor with a vacuum gauge. The Project: - Replaced my existing fuel injected 302 with a fuel injected 351W The Symptoms: - Starts OK and runs so long as I give it some throttle, but as soon as I try to back it down under 1,000 rpm it sputters 351w EFI Problems. 1987 - 1996 F150 & Larger F-Series Trucks - 1992 F-150 5. Set timing at hi-revs (above max timing point) for 36° and see where it settles at idle. Originally published in the December 1998 issue of Hot Rod magazine. I tried all of that and i think the timing issues are OK now. Post by kmg36 » Mon Mar 09, 2009 10:47 pm. I should mention that its not very consistent, it's like my bronco has bad Jun 12, 2017 · 1987 - 1996 F150 & Larger F-Series Trucks - 89 F250 5. just Running fine, died at idle and is now so rich it won’t run - Running fine, died at idle and is now so rich it won’t run - Electronic fuel injection tuning for automotive applications. Post by mklink » Tue Apr 20, 2010 11:09 am. Are you set on a long-runner intake like the ones May 1, 2018 · Started the engines the other day, and immediately noted the port engine hunting from 400 to 600 rpm’s with throttle at low idle. 9 high idle issues and have been unable to fix my own instance of this problem. it does this about 75 percent of the time,other times it runs alright. Thread starter kunar; Start date Feb 23, 2014; kunar it assume 38psi and opens an injector for XX time to get X amount of fuel, if pressure is higher X. I set static timing at 10° and disabled 'Idle Spark' control. 90 Day Limited Warranty. 020" in, 1. I hope someone out there has a solution for me. there are no vacuum leaks anywhere, i have cleaned the IAC valve but am still having this issue. g. It shows 79,000 and I believe that is correct due to the overall condition of the car. and when a EFI Ford idles too high Im betting on the IAC being bad. I have a 1988 F150 Reg. I have mine set to 13. I'm still having trouble getting my rebuilt 351W running smoothly. Save Share Reply Quote Like. Back to Subforum. Shop Holley Hi-Ram EFI Intake Manifolds and get Free Shipping on orders over $175 at Speedway Motors. 0, and Acceleration 12. Customer: I have a 1995 F250, 5. I checked all the vacuum lines and replaced the bad ones, but the problem presists. Also, it runs fine at part throttle, but blows black smoke and misses at May 7, 2024 · 351W EFI High Idle - You know the drill - Ford Truck Enthusiasts Forums. They removed the valve rotators as they were considered a weak point for endurance racing. Jun 21, 2013 · I'd like to know too. First start went well (just started, not run up to operating temp yet) but I need to set initial timing & I'm wondering if anyone has some personal insight. Dropping a 351W into a Fox or SN-95 chassis isn't anything new, and a number of companies offer all of the parts you need to bolt it right into your Mustang without too much drama. Nov 20, 2023 · '67 Coupe, 351w, Pro Flo 4 EFI, AFR Renegade heads, Lunati Voodoo hydraulic roller cam, 4R70W tranny, 4. Thinking of changing the Target AFR to something very lean (14. I had issues related to most topics you read about, lean tip in, hunting idle, hesitation, RPM noise code etc. i Jan 29, 2001 · 1987 - 1996 F150 & Larger F-Series Trucks - 89 f150 high idle - Guys,have a 302 engine,which had a 2000rpm idle at start up,then after 30 seconds dropped to 1600rpm,after a few minutes down to 1100 and stayed there. 9, Cruise 14. My findings and troubleshooting efforts thus far: 1. 0 efi. I have checked and cleaned the following:-throttle body. @JRFox, when you disassemble and clean the ITB, could you take a look at the vacuum port configuration inside the May 12, 2011 · I have my 351 running again and still have the same issue that I have been trying to figure out. Hi guys, Been here years but had to re-register. A Jun 21, 2016 · I have a Ford 351W TFI with an MSD running full sequential injection with 3. It starts and idles fine when cold, but idles rough and dies when it's warmed up. 8/351W) - 1986 302 efi idle - I have a 5. 9L has had a high idle ever since I bought it from my brother-in-law. 0 fuel injected engine with the AOD. I immediately proceeded to replace the motor with a 351W. Dominate the road with precision ignition control and multiport injection, and elevate your ride with Wild Card Sequential EFI Master Kits. then Dies! Thread starter shima77; Start date Aug 22, 2014; S. Jump to Latest I am at 10 degrees on my mild build 86 351W w/ holley sniper and full hyperspark ignition. Not sure that the high idle is due to a lean condition. 1987 - 1996 F150 & Larger F-Series Trucks - *Solved* 92 4. Unlike regular throttle body EFI systems, Pro-Flo 4 features the fuel rails and individual injectors The EFI Hi-Ram manifold line has a new addition for the 351W Ford application. need help!!! - I have a 94 f150 with 5. 0 with E4OD pretty well sorted now. Idle Control Problems and Drivability. When vacuum leaks are indicated When the idle drops to 650 rpm it starts to sputter and eventually stall. -MAF using the correct MAF cleaner-IAB The engine was just put in. i have a 1990 f250 w/ the 351w. Nov 29, 2023 · 1987 - 1996 F150 & Larger F-Series Trucks - 94 F250 351w High Idle and backfire issues - I?m stumped as to what?s going on with my engine. car be able to cure the high idle. Then turn off motor, reconnect IAC, and then disconnect the negative Nov 5, 2024 · 5. I still cannot lower the idle even with the mix screws out 2 turns. When its in park it starts to fluctuate idle from high to low and then will die. Ford Truck Enthusiasts Site Navigation. I know there used to be one around about properly adjusting your idle screw on the 90s EFI trucks. Just wondering what people have their target idle AFRs set to, with a large aggressive cam with overlap. Dec 7, 2020 · I used the idle speed table to set my idle speeds at different temperatures. no cats, no muffler, Oct 7, 2023 · '67 Coupe, 351w, Pro Flo 4 EFI, AFR Renegade heads, Lunati Voodoo hydraulic roller cam, 4R70W tranny, 4. I will be running Sniper EFI. Please watch our video which covers the 5 principles of tuning your 351W. , and it fluctuates between about 16. Its hard to start, runs very rich, has a rough idle, smells like gas when i start it up and take off from a light, and Dec 21, 2010 · 1987 - 1996 F150 & Larger F-Series Trucks - 94 5. i've replaced the tps,iac valve,map sensor,act sensor and the egr position sensor. 7 rr . He's spent several hundred dollars and at least two shops have tried to Jan 2, 2012 · It has an EFI 4. Don't let your buddy touch anything else on your car. 8/351W) - 351w running rough - my 94 f150 with a 351w is running rough. 8 based on input I got ‘69 351w Edelbrock Pro Flo 4 EFI AFR 185 Renegade heads is your cruise RPM, 27* advance at cruise seems low to me. this started happening after i installed hooker. 9 (Walk softly and carry a big 6, lol) and the 4-speed manual with OD. Use a hand held tach for idle speed. Got it about 2 years ago for my wife, she wanted something with a stick. #7 03-28-2012, 06:39 AM brandx. I am beginning to think my idle issues is with the carburetor. I have a video I'll try and link. Turn the dizzy to where the highest vacuum is, then turn it back just Idle Air Control Valve; Map Sensors; Oxygen Sensors; Pressure Sensors; Sensor Accessories; Throttle Position Sensors; Travel Sensors; Boost Control; FUEL RAIL KIT, FORD 351W HI-RAM. Jan 19, 2004 · EFI Idle adjustment procedure? The little sticker says not to adjust the screw, but ours had been adjusted during trouble shooting a high idle problem. The needle oscillates RAPIDLY at idle and does this anywhere up the RPM scale! At idle the average is at about 16 in. After the backfire you have to feather the gas to keep it running and that clears up after 30 secounds or so. Remember that the IAC can only add air to increase the base idle speed set by the mechanical adjustment. After a lot of learning and redoing of certain things, it runs and drives Nov 20, 2005 · Finally got a vacuum gauge and plugged it into the vacuum port on my 351W's Performer RPM intake. Apr 23, 2016 · GO EFI-4, 600hp Power Adder (no timing control yet / controlling electric fan) 66 Coupe - N/A 351W 425HP - Levy Racing T5 - Homemade EPAS - Maier Racing Suspension It does idle higher when cold, just not as high as when it was carbureted. 8/351W) - EFI 302 idles rough, blows black smoke at WOT - Hi everybodyI'm trying to troubleshoot an EFI 302/AOD. Stalls when put in reverse and ocasionally when put in drive. 5) because apparently with a large cam with overlap, what the WBO2 sensor is seeing Apr 12, 2010 · The Swap. 0/302, 5. Duration: 280/288 Duration @ . The one I have is not cleanable, and I'd like to see if it's working properly before I buy a new one. is there any tips to timing a EFI 351w car. I've read that 351w Small Block Ford Specs, History, and Identification. 050": 227/235 Lift: . without high RPM's (below 5000 RPM), hard use, or extended periods of high loading or long periods of idling. May 13, 2023 · Verify your mechanical advance is working. What you have to do is adjust the secondary throttle plates, closing them (ccw) also. It seems to me that the motor hunts constantly for proper idle speed, noticeably when you put it in gear (AOD). 600" ex, 64cc combustion chamber)-Edelbrock Performer intake manifold-Holley 600 cfm carburator-COMP Cams Hi-tech Pushrods-Melling high volume oil pump-Mallory HEI distributor Feb 27, 2017 · 1987 - 1996 F150 & Larger F-Series Trucks - 1989 f250 rough idle and erratic idle - Ok, so I have a 1989 f-250 with the 351w, High Idle still after replacing IAC. 3) and I can’t get the RPM’s over 2000. Experience seamless electronic fuel injection technology for optimal power and efficiency. Call 800. 8L 351W High Idle. It idles high, between 1500 and 2000 rpm. A friend of mines EFI 351 does it also. When I start the engine it idles at 1500rpms then comes down to 600-625. 9L / 300 - Chronic high idle problem - finally fixed it - My 1991 4. 8l engine in my 94 f250, the engine had been sitting for awhile but runs really smooth with 38k miles! anyhow, it will run well, warm up then kick up to the 1850rpm idle, ive been Jun 18, 2008 · Small Block V8 (221, 260, 289, 5. Video Link. A common indication of idle control issues is when the Idle Air Control (IAC) valve’s steps fall outside the recommended range. com, found several threads suggesting dirty fuel filter, air leak somewhere between Jan 21, 2003 · Fuel Injection, Carburetion & Fuel System - Idle adjustment on 92 351W EFI Help. What follows is most of the research I’ve done on the 351 Windsor (351w) in preparation for swapping it into my truck. I'd go from there. Crower leads the market with 55 years experience manufacturing high quality custom products at an affordable price. 565 Lobe Separation: 109 LC Included Lifters: No 1800-5500. 8l and e40d tranny. Show More Show Less Compare. this is how i had Jan 9, 2008 · Going through this right now with a 351w in a '94 truck. Part Number: EDL-29245 5. 979. Check for Availability Nov 6, 2005 · Excessively high idle speed on 1988 F150. I am have been having high idle problems for a while now. 8/351W) - 351 windsor wont idle correctly - hi all, i am working on a friends 77 f150 with a 351 windsor. I'm guessing in 2nd its dragging the rpms down to a point to where they wont shoot back up like idle in 1st . A 351W might be in my future and I really don't want to go back to a carb after I put EFI on my 302. You'll then have to re-adjust the main idle adjustment screw, going back and forth till you get that value 0f 2-10 and idle is good. 95 Shipping calculated at checkout. I'm in the Denver area at 6000 feet. We installed the system and it runs pretty good except that the engine idles too fast, like May 23, 2020 · Idle problem with 1988 FSB 5. Fortunately the original motor had new manifolds and risers so I decided go the length and fresh water cool the system. 73, 15" Halibrand replicas, SAI mod, full bumpers, 2 X roll bars, I² electronics, PS, hydroboost, 5-lug, brakes: 95 GT front, custom MK VIII calipers/Cobra Dec 31, 2009 · I have been reading and researching many different 351W options for EFI, and I thought I would post some questions here for the EFI gurus. Cobra Make, Engine: Feb 1, 2016 · 1987 - 1996 F150 & Larger F-Series Trucks - 351w EFI 1993 f150 lobe idle and air pump - 1 My 1993 f150 when warm will always have a lobe idle when it is warm, i find it very annoying, no vacuum leaks or anything, i replaced the IAC a while a go with a newer napa one and it went away for a while. Seems to happen when the especially after motor is warm. 84 posts · Joined 2004 Add to quote; Only show this user #1 · Sep 23, 2005. 55:1 gears in the 12-bolt. Edelbrock Pro-Flo 4 EFI systems provide you with a high performance traditional-style intake and 4150-style throttle body. 1989 Bronco 4X4 351W EFI C-6 3. Ignition 20 up to 35, load 70->wot. It's a bit harder to do with EFI since the EFI tends to adjust things (e. The air/fuel ratio’s begin to reach their target settings the longer Apr 16, 2018 · 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - 351w Idle problems - Hey guys, I have a 351W with Motocraft 2100/2150 carb, auto choke, and Duraspark. Talk to the experts. was running pretty well and firing right up. Unfortunately, the Allen screws that hold the Jul 11, 2019 · I went through the checklist on startup. it is in nice shape and doesn't hang up. Basically, cold I have it at 1400 and by 165°F it's set to 800. I'm currently trying to get the IAC Position to 2% at idle hot. So I just tune it by ear. May 11, 2005 · with my old 351w i got about 13-14lbs at sea level and when i had it at 1000ft elevation it was lower i think i don't remember. BrainFearGone Discussion starter. Timing was set to 14 degrees at idle of 850 RPM and 36 degrees total all in at 3500 RPM. Head Type: Standard. Long story short I Jan 15, 2021 · I think I have settled on a cam choice for the 351w build, wanted a smooth idle as much as possible but wanted to upgrade to roller lifters. 11 rear, 363 RWHP Ride Along Video! Different words for verification: Add 12° from max vac to 10"Hg, taper to 0 added at 5"Hg, from above high-idle to max rpm. Ever since I started the engine, I had trouble with over heating, rough idle, and sporadic vacuum Jan 6, 2021 · I have this 1989 F-250. 5. :) So don't know if anyone remembers me, but back in maybe 2008-2009 I had a stroker/maf project on here. I had the installation of the Fitech a couple weeks ago and have had a lot of issues getting it to run correctly. Aug 13, 2011 · Small Block V8 (221, 260, 289, 5. Aug 1, 2023 · Current AFR settings are: Idle 13. 1982 Ford Bronco 351W, Stock. Save Share Aug 23, 2014 · EFI 351W rough idle. 8 with 88000 miles on it for plowing snow. 1987 - 1996 F150 & Larger F-Series Trucks - 351 fast idle. Choose Speedway Motors for the highest quality Small Block Ford 351W Intake Manifolds available. It will idle at 700 to 800 rpm's after being started, but if i rev the engine up to 2000 it will settle down to 1100 rpms. Remember that changing the mechanical idle speed Unlock your engine performance using the Aces EFI Wild Card Sequential EFI Master Kits. I've attached my GCF tune file and a datalog when it's cold. 1990 F-250 351W EFI- CHOKE seems to be STUCK. Some performance engines, especially those with Jun 21, 2021 · A car with the 351W you missed is the 1995 Mustang Cobra R. , custom 4 bbl mass air EFI, Quarterhorse (self-tuned), AFR 195CC Renegade, XE274HR, GP 4 into1 into 4 SS headers, 3link, 3. Is fuel pressure steady when you stomp on it? How about O2? If it was easy, everyone would do it. 5:1, CR, and a cam that is advance 4deg. Sep 22, 2005 · EFI 351w timing issues. Feb 28, 2015 · 1987 - 1996 F150 & Larger F-Series Trucks - New 351w running rich and bad idle - Hello, I have recently swapped in a 351w from an '89 f250 as well as the zf 5spd. Show Printable Version. Brand: Holley EFI. /Hyd. I bought the truck from my brother in law who was the second owner and Jan 12, 2023 · This common issue can cause high RPMs at idle. The Pro-Flo 4 EFI system requires a high pressure fuel system providing 43-45 or 58 Small Block V8 (221, 260, 289, 5. when its cold it idles alot worst. I read over in the newbie forum that the vacum port for the vacum advance is supposed to be on a static port on the carb he explained this as a port that has low vacum at idle and higher idle when you p[ut your foot into it. Getting the throttle blade Mar 8, 2023 · If the idle is unacceptable, return the idle mixture screws to the highest vacuum setting, but in most cases this slight lean setting will still support quality idle performance. Checked boatdiesel. Here's the background: Oct 9, 2001 · Hi all, I'm back after a real busy summer. however, my current 466 with a 292hed cam, the dead highest vacuum i could possibly get with her at sea level was 14. After reading posts,removed and cleaned throttle body spotless,replaced throttle position sensor and the Oct 29, 2001 · Small Block V8 (221, 260, 289, 5. 8l, MY-89)-World Products Windsor Sr heads (2. I could go through and dig up all the specs I have on the cam and springs, lifers etc if that would help. My problem is i can't get it to stop running rich. Isn't the Victor #2946 an upper RPM manifold (4000-7500 rpm) where the #3833 is lower (Idle-5500 rpm). after sitting about a week I went to start it and it wouldnt start until I put Jun 13, 2019 · 1995 Bronco 351W idle issue that has my (not to zero) reading. My neighbor came over while I was futzing with it and immediately said, while it was idling, that I had a miss. 05-10-2010 09:08 AM. - Hello everyone. I know most of the components but not sure of machine work to the block. It has a high idle problem. Then the current through the IAC can vary the airflow through it under computer control. A vacuum leak on a speed density efi system does not act like a carb with a 351, 351w, 58l, 89, adjust, bronco, fast, iac, idle, leak, location, sensor, tps, vacuum. Aug 30, 2010 · I am having trouble with my 95 351w idling fast. Maybe the engine doesn't want that much advance at a mile high. 75 to about 15. Jan 19, 2022 · Many people use vacuum readings at idle to assess where timing is best. Feb 15, 2021 · I took it for a short test drive around the block and the vibrations are more continuous under load, and the vibration is more noticeable the higher the RPM's go. I'd appreciate the help if anyone has any suggestions. Only at www. I have been running at 14 deg advance, but mileage is very bad, the idle is rough,a nd start-up is slow. Jun 21, 2023 · Base timing is set with the engine at idle. Site Announcements; New Member Introductions; Jul 3, 2010 · Small Block V8 (221, 260, 289, 5. Also, it idles very high. Jun 16, 2007 · OK, I've got my 351W installed and I just can't seem to get it to run right. 5, 1000 RPM, but it doesn't seem to like it. 0 automatic. Dec 29, 2003 · 1978 - 1996 Big Bronco - 1989 Bronco is Idling High (2Krpms) - Question 1: My nephews 1989 Bronco is idling Most likely a vacuum leak. Range (RPM): Idle To Check out the deal on Edelbrock Pro-Flo 4 EFI Kit, SBF 351W Engines 35950 at WILD HORSES ignition curve, idle speed, acceleration fuel, coolant fans, Rev We would not expect any issues using the Command Center, if it has been working so far. 625 Inch; EFI; High Rise; RPM Power Band: 2000-6500; Strip Use Only; Shiny Finish; Ford 351W. 57x. correct me if i'm wrong at this. 0122, 7am-10pm CST, everyday. Jul 15, 2000 · Small Block V8 (221, 260, 289, 5. sometime I can go all day no problems then 2 -3 times a day. But luckily, we have an awesome EFI shop in town and it took him 2 minutes to identify and confirm my problem. 0 out of 5 stars May 2, 2019 · I have a problem with high rpm 2000-4500 rpm while in first gear coming to a stop it only happens in 1st gear and it will not go down. 0, accel fuel to -7. Got it started up the other day, now the issue I am experiencing is a high idle (sounds like my 7. Email this Page. Jul 13, 2011 · Hi! I've built a mild 351W for my Ranchero -73 this winter with the following specs;-351 Windsor (5. About 109,000 on it, very good shape over and Jun 9, 2017 · I recently bought a FiTech Go EFI fuel injection system for my big-block Chevelle. IDLES at about 2500 when at running TEMP. Jan 1, 2023 · The 351W Ford Should Have Built: Part II. Could be lots of Ford 351W Windsor Down Draft 8 Stack Turnkey EFI ITB System Kit - Housing to shaft lip seals behind bearings for extra sealing under high vacuum - Idle by pass air bleed screws for super smooth idle and to aid Idle Tuning is a very important part of tuning any EFI system, especially our self-learning units like Sniper or Terminator X EFI. . The engine makes 400hp on 87 octane. 351w EFI Problems. Edelbrock Pro-Flo 4 EFI Systems. It May 2, 2024 · When it's warm after you just started, it idles around 80% IAC Position until I get to 3% TPS then it lowers to about 20%. Fixed '88 F150 High Idle fixed. he went to go somewhere the other day with it, started it up and Ford Small Block 221-302 1963-1995, 351W 1969-96 Advertised Duration: 260/266 Duration @ . Add to Cart. This manifold comes with a 105MM LS throttle body flange top, a 95mm LS throttle body top is also available. mattt Bronco Guru. It runs rough and occasionally bucks under load. mklink New Member Posts: 1 Joined: Sat Apr 17, 2010 8:53 pm Truck: 1988 F150XLT. 496 Lobe Separation Angle: 112 Intake Centerline: 108 Valve Lash: Hyd. HG. Feb 18, 2011 · Small Block V8 (221, 260, 289, 5. I bored it Idle is better but still high. Vacuum 1972 351c torino 4v esc 351c engine diagram [diagram] 1977 ford f 150 vacuum diagram 351 engine. 050": 207/213 Valve Lift w/1. com, the official website for Hot Rod Magazine. Part #: 534-234. The first place to look is the idle air control motor fpr open and close operation, Feb 1, 2013 · So far this engine runs well except it has a high idle. Mainly when it's cold, but sometimes even after it has warmed up. 5 amount of fuel would come out, making a How long should i idle my 2002 ford ranger fx4 off road in the morning if its below freezing 2 days ago · Tuning the Ford 351W and best 351W performance parts. I’m sure I need to change some more settings, as when I start it, it revs up to 2K and than idles back down to 850 after 2-3 seconds. On intial start up it goes to about 1500, then down to 1100, and after a few moments it drops to about Feb 8, 2018 · My first guess based on your problems would have been the idle air controller. Currently only running a wide band, no Crower's high performance camshafts, crankshafts, connecting rods, roller lifters, rocker arms, valve train components and large variety of aftermarket engine parts for international and domestic automobiles, diesels, boats, tractors, motorcycles, and trucks. 8/351W) - Testing Idle Air Control Valve - See Annoying engine problem below this post for details, but I was wondering how to test an idle air control valve. 60 Rockers: . japple157. So spoke to Lunati, they have a link roller lifter setup for the 351w Jul 25, 2013 · MK 3. very HARD to COLD start when WET Seeing that this not carbureted, there is no choke, but I know what you're saying about the high idling and the causes. ACES EFI’s The Joker™ EFI kit include a 5" LCD high Adaptive self-tuning strategy for idle control and fuel control Integrated CDI Ignition Apr 23, 2010 · You adjust the two idle mixture screws to obtain the highest RPM. Fuel Rail Package for EFI Hi-Ram 351W. Cold it shows 45 lbs at idle in park. Jun 29, 2004 · First of all, the idle needs to be adjusted to where the speed is at or below 600 RPM with the IAC disconnected. Didn't help Jan 10, 2010 · Having a high idle problem with my 1989 Bonco (stock 351W, C-6 trans). I have an 84' 2001 with the 351W and it runs really well but seems to idle high after warming up and running for a bit. Jan 31, 2023 · So it started about 3 weeks ago, I had went on a decently long road trip to the sand dunes (4 hours) and left the truck sitting for about a week and then when i went to start it I noticed that the idle was fluctating slightly, i thought it was a bit strange but didnt think too much about it because it seemed to have no loss in power or any other obvious issues. I have set the idle screw a couple of times to 5% IAC Position then you restart it and it's high again. I bought from a friend with ritually the same setup. It ran great but always was rich. It usually idles around 1200-1400 RPM, even with the IAC disconnected and the base Nov 2, 2002 · Small Block V8 (221, 260, 289, 5. 800-4200. Problem: The car starts instantly. 7 and WOT at 14. The problem, besides that, is that since it's gotten colder, the idle will drop lower and lower until it stalls. Frequently will not start easy without a kick of the throttle or idles at 400 RPM or stalls. Mar 9, 2009 · 1988 5. 93 mustang 351w, Holley hp efi, 5sp, 24lb injects, F303, 1. Customer: I have a 95 Ford Bronco 5. I'm sure the carb is the 2100 (2 bll) series based on the pictures in the factory manuals. Hi Everybody, Trying to figure out my next move. Deck Height Only, Ford, 351W, Each. It also starts hard sometimes, and sometimes wont Nov 19, 2015 · After you have a functional screw, disconnect IAC and use the screw to set the idle speed to 400-500 RPM. The best 351W parts on an engine are in our opinion the ones that give the best power gain for you spend. My recent manual trans conversion has just exacerbated the problem. 2. 8 high idle and hard starting - '95 F250 5. 302 V8 EFI issues. Not sure if these are factors, but I included them in this post just in case Jun 14, 2009 · OK, I need help. That, and I prefer the long runners and big plenum for a street engine. Jump to Latest Jul 9, 2010 · Hi, I have a Fast efi 2. It's a somewhat common issue on that generation of Ford EFI systems.