Ford 302 high idle

I guess newer technology = newer parameters. I wouldn't think a 302 would be that different I have a high volume pump (w/ a chrome-moly oil pump drive shaft) and have 72 psi maximum oil pressure. Wiring it in was easy Finding the SEIC connector was a royal PITA. Hopefully you'll have the engine idling around 450 rpm. It has 2 set screws which allow you to make the adjustments you need to. 0 high idle - SOLVED! My 1994 ford F150 XLT 5. Jun 3, 2023 · So I completed the idle mod on a 2024 plat today. 0, including the T-5. Without it, at idle, the mix burns so slowly, a lot of the fuel is still burning when the exhaust valve opens, causing a rough idle and high exhaust temps. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The correct ignition timing for the Ford 302 at idle is typically 8 degrees BTDC (before top dead center). 0 302. On anything but the meanest cams, it lets ignition light the mix early enough to reach peak pressure when it needs to. Ford's instructions on how to adjust the idle speed for engines with electronic fuel injection (EFI). '68 302 10. #1 · Aug 4, 2009. get codes 121, 10, 122, 172, 332. 3. Ha! Mar 21, 2007 · 1 / 1. Mar 11, 2022 · Step 3 - Engine vacuum is a sealed system and must hold a specific amount to maintain proper idle conditions, inspect the engine vacuum hoses and intake gaskets. I have a 1978 302 in a 1926 model T. I have checked and replace idle air bypass valve. ounce the truck gets to operating temp it will not idle in park or neutral with out throttle help. It's high enough that the truck will run 35 to 45 mph on Aug 29, 2015 · repeat process until the engine bare;y increases idle etc then retard timing 4 degrees. When I press the gas it just idles really high at around 2000. I'm having a high idle issue on my 1992 F-150, 5. To go much higher you'd need an aftermarket block and a balanced, forged bottom end. Sep 3, 2018 · It may be this or the ( pcv valve ) pcv get clogged alot on old fords. Tough with a surging engine though. KOEO test reveals a 12 and 13. by boy_welder2000 » Wed Jul 22, 2009 12:56 pm. 0 has a high Idle problem that just recently showed up. The wiring was nightmare, all scabbed in with electrical tape. My 94 302 is having some idleing problems. Originally I was trying to correct an inconsistent idle. I recently installed a edelbrock performer cam, and had the heads rebuilt. astumpf. Mainly when it's cold, but sometimes even after it has warmed up. OK, so 300's do it and 302's do it. Aug 11, 2014 · 289 won\'t idle below 1000rpm. 9L / 300 - Chronic high idle problem - finally fixed it - My 1991 4. I need direct help from this awesome community. I am out of town and limited internet access. 1999 BMW M Coupe - Stock. Then adjust curb idle speed to actual desired speed (usually around 650 rpm). Nov 8, 2007 · Thxs Blue Beast. Reinstall the air duct. Jun 1, 2009 · Here it is from Me & Ford RACING: (Follow these steps exactly, and their order!) 1. Cold it idles at 1000 rpms. 55 to 3. Just bought the truck and am trying to iron out the little "new to me" gremlins. 0 EFI - High idle all of a sudden. I'm pretty sure it's with the TPS. Good evening everyone, Bought me a '93 F150 XLT 4wd with the 302 back in March and ever since then have been chasing a high idle on the engine. What I'm dealing with Is a high idle. 0 302 with High Idle. when truck engages "drive" it idles around 1000- 1500. Mar 16, 2010 · 1988 302 350kms/approx 220K miles Have searched and read f150 forums for two weeks. It goes to 1800 RPM comes back to 1600 then goes back and forth. A noticeable change in idle speed indicates a leak. Sep 26, 2015 · Received 1 Like on 1 Post. May 11, 2005 · I'm running that same cam in my 351W. Problem happened gradually (used to be able to pop gas pedal to get it down). 672. If you idle it too high it will jerk more when you put it in drive of reverse. High idle it says 1400. I sprayed some throttle body cleaner in the throttle body, hoping to clean the IAC motor a little, too. Checked the codes and it threw a code that the EGR had insufficient flow. Its only about $60. The amount of air is determined by the Powertrain Control Module (PCM) and controlled by a duty Apr 5, 2013 · 86 f150 302 efi rough idle and hesitation - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. I had a weird stutter only when the AC was on around 3-4k rpm. 1987 - 1996 F150 & Larger F-Series Trucks - IAC - Extremely High Idle - My 95 F-150 w/ 302 was surging some at idle and a little rough but still at the appropriate RPM. I have a high Idle on my 89 302 around 1500rpm. Ford Inline Six, 200, 250, 4. At startup mainly and every time. 0 High Idle Problem - Got an 86 F150 EFI 302, have had it since it was new. The idle air control valve (IAC) control the engine idle speed and dashpot functions. Feb 3, 2010 · 302 stumbles/stalls off idle. In drive it Idles at about 1200 RPM. VACUUM leak. The most common source of a leak is a loose/ cracked vacuum line. This is my first post so please be kind. When I first start the engine it runs great, and idels in great. Ford already makes the part you are referring to. 351c 475 horse, + 150 hp shot. I have an edelbrock performer intake and 600 cfm performer carb. 6K posts 36. Which coverts to crankshaft timing as: 17-22° crankshaft advance at 2000 crankshaft RPM. 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - 86 F150 FI 5. With #1 at TDC, showing about 10* BTDC on the balancer and the rotor pointing at #1 on the dizzy (approximately 2 o'clock position) everything looks good. The carb is an early model 2bbl with a Dec 21, 2010 · My truck runs strong from idle all the way up to 5,500 rpms and that with the 35 inch tires. When I first start it, it jumps up to 2000-2500 rpm and stays there for a few mins. Feb 29, 2012 · just bought a 1992 f150 xlt 4x2 5. Start the engine and let it idle as best you can. 00 bucks. I cleaned old idle air control valve, Apr 11, 2008 · 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - 1986 F150 302 V8 EFI - High Idle - Hey, guys. May 3, 2020 · 996 posts · Joined 1999. pistons (9 to 1), (30 over on cyl walls), oil pump, heads had to be shaved a bit as right head was slightly warped, new valve job, with new rod guides and hyd. If you check the links, you will see what idle speeds you can achieve. If this tube becomes loose or broken it can leak un-metered air into the engine Apr 21, 2017 · 1987 - 1996 F150 - 95 Ford F150 High Idle - New to the Forum. So to start, its a 95 F150 302 with 175,000miles on the clock. The idle will stay between 1500-2000 rpm continually. A couple of minutes after, same issue, 200rpm +. Nov 4, 2007 · The plenum gasket was the worst, but I had two other minor leaks. 8/351W) - High Idle on 1987 302. as heavy metal said, the front screws are air/fuel screws, which will need to be adjusted back. I tore it down to replace the lower intake gasket because I realized there was a leak at the Jan 13, 2010 · Get you a vacuum gauge to set your idle mixture screws. 0 302 with High Idle - Ford F150 Forum - Community of Ford Truck Fans Jan 12, 2007 · Take 3 or 4 sharpened pencils cut to about 2”-3” and put sharpened ends into the bolt holes to keep the gasket aligned. It wont come down even when I tap the gas pedal. I installed a static 20K ohm resistor for a 1200 rpm idle. the 289. The vacuum advance is pointing about straight towards the Rad. It is located on the driver side. Disconnect IAC (Idle Air Control) Solenoid. Google idle speed adjustment screw. set the vacuum advance to add 6 degrees. After about 10 seconds the engine idles very high, like around 2500 - 3000 RPM. msd ignition headers. Then as it warms up, it gets even higher. I'm learning a lot through my truck but there's so much more to learn. 5-11° distributor advance at 1000 distributor RPM. The short stroke helps but the stock bottom end is only safe to about 6500rpm. Friggin Ford crazy. any Jan 14, 2019 · Quote: Originally Posted by Boss_Hogg. # 15. My truck has been excellent to me, except that half of the time, it has an idling problem. When started cold, it has what I consider a normal high idle. drive second and low it only idles a little bit high. Jun 27, 2003 · 1987 - 1996 F150 & Larger F-Series Trucks - '88 302 High Idle - Hey all. I was able to get some internet and found Seattles kick ass Jun 12, 2017 · Ended up replacing most of the fuel system with new tanks low and high pressure pumps and fuel filter. Warning: I'm a novice when it comes to vehicle maintenance. Dec 14, 2021 · Get Engine To Operating Temperature. There are not many causes for the fast idle. The ignition timing of the Ford 302 at idle is set by the engine computer based on a variety of inputs such as engine temperature, RPM, and throttle position. look on edelbrocks website for exact instructions. Aug 4, 2009 · 199 posts · Joined 2005. It fixed it for the Dec 31, 2012 · I also have a 94 Bronco with 5. With Auto tranny, don't be surprised to find the diaphragm in the brake booster has given up. you need to turn the screw by the throttle linkage counter-clockwise. Hi all, If I remember correctly, the proper idle speed for a 302 is around 700 to 750 rpms, although, I'm not sure if I'm remembering correctly. My issue is that the engine is supposed to pull a vacuum of 18-21 lbs. This is an 82 302 with a T5 tranny in a 66 convertible. Better? Mar 21, 2011 · The camshaft parameters will determine how an engine idles, if it is the stock cam, 500 rpm in drive is normal, if you have a perf cam it will have to be higher. Feb 3, 2000 · Stuck/high Idle '88 302 w/ efi. Start and run the engine for about one (1) minute to dry out the solvent residue. I’ve been reading many threads and post on here for a while trying to diagnose my situation and I just can’t seem to tackle the problem. 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. Once the motor is idleing say at about 750 rpm - -you adjust the idle mixture screws as explained. Replaced IAC no change. Spray the mating joints of the carburetor to manifold, and then manifold to heads. Jul 17, 2013 · 1981 302 Stalling and Rough Idle. Replaced plugs, wires cap and rotor no change. What is currently going on is after cranking the truck it does it's normal rev up to 2500 rpms and then slowly goes down, but instead of around 700 rpms it will just hang out around Apr 21, 2010 · One way to check if the linkage is an issue is to disconnect the gas pedal line and see if the idle goes down like it should. 138k miles I've searched for these problems but haven't really found any answers that worked. 1990 f 150 302 5. I tried IAC changing that out, I tried a new TPS, and adjusting it, cleaned the whole trottle body liberaly, put a new throttle body gasket on Feb 14, 2015 · 91 5. 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - 1986 F150 302 V8 EFI - High Idle - Hey, guys. Jul 10, 2011 · Stop actuator and stop engine if running. 0 at very high idle, it will go 30 mph without stepping the gas, and will sometimes not want to shift. 0 302 v8 dual tanks and a long box it has a very high idle when strictly idling. 1987 - 1996 F150 & Larger F-Series Trucks - 95 F-150 5. Operate the actuator to make sure the solvent is purged from the idle by-pass valve. Oct 25, 2009 · Clean the seating on the IAC motor, then make sure all the wiring and sockets are in good condition. Choke setting, screw - linkage issue or a vacuum leak. my car won't idle below 1000 rpm, It never bothered me with the edelbrock carb because I always figured it was the idle circuit being to big for the 289, well it is the same with the bigs carb. You are speaking about idle mixture and not speed. My 89 is doing this and if I don’t let the idle die down before taking off then the right rear wheel starts jumping around when I touch the brakes. Warm it idles at 1100 or so. Repeat steps 5 and 6 until lowest idle speed possible is produced. If idle air bypass is unhooked, idle returns to near normal, but of course there is Mar 12, 2018 · Ford Inline Six, 200, 250, 4. Hi everyone. Anyways, Bronco was running fine , I drive about 150 miles to my buddy's and my idle is about 1300 all of the time, something has definitely changed. modify your mechanical advance to reach that timing at that rpm when you have it set to the new initial timing. 0 302 Manual 5 - Ok. At low idle will sometimes stall at a stop. I have installed a mild Compcam with a 4 barrel Holley and power brakes. It would honestly just sit and idle Nov 22, 2010 · 95 F150 Rough Idle issues. Cab, Manual 4x4, 302 EFI, Manual 5 speed. Mar 3, 2013 · Fast Idle on 1988 Bronco with 302/AOD. From what I read on cold start, it should hit somewhere above a 1000 RPMs and stay for a while until the engine starts to warm up and gradually come back down Dec 13, 2004 · 58, 58l, 92, adjust, common, f150, ford, high, idle, leak, park, problem, problems, truck, vacuum. Oct 19, 2016 · 11-04-2002 07:22 PM. 2015 - 2020 Ford F150 - High idle problem - I have a 2018 5. ) Un-plug IAC while the engine is running, if it stalls turn idle screw 1 entire rotation, re-start staab throttle, continue this until it idles without the IAC plugged in. You need a bit more than that. 73 gears (not sur yet), on more or less a 4000lb vehicle. Jul 22, 2009 · Idle problems with 94 F150 302. Pulled the IAC and cleaned w/ Seafoam and compressed air - very carboned up. 8/351W) - 302 0 Psi Oil pressure at hot idle. 0, one is a sticking IAC (idle air control valve) , the other is a leaking upper intake gasket which is known to suck in at the upper plenum and the other is a failing TP (throttle position sensor). 06-01-2002 09:59 PM. /. #17 · May 4, 2020. Here's a bit more explaination. The link below may or may not help those that are having the same issue. lifters. It wont come down for anything. The truck had been acting just fine until one day while hauling off limbs – the idle just jumped up. Nothing fancy, mild cam, headers, and the factory 2bbl. My BPA-ISC (bypass air idle speed control) was disconnected May 23, 2018 · 1987 - 1996 F150 - High Idle on 1989 F150 5. Dropping it into drive, this will drop the idle to about 750. 1987 - 1996 F150 & Larger F-Series Trucks - 1990 Bronco 302 high idle - Hi everyone I have a 1990 bronco with a 302 AOD that idles high even after warmed up. Need help 1988 F150 4x4 Manual 302 The engine has an Idle of about 2000 rpm. With 180,000 miles on it, the engine runs great with plenty of power and no noise. Jan 6, 2008 · A. Got it about 2 years ago for my wife, she wanted something with a stick. 1987 - 1996 F150 & Larger F-Series Trucks - 92 f-150 5. Which means - with a total advance of 38°, the initial timing seen on the engine with a timing light would be 16°BTC to 21°BTC. hold the throttle 1/3rd open or hold the engine at around 2500 rpm. Mar 28, 2008 · Even a no-start condition. If engine stalls, turn the throttle stop screw in one full turn and restart. Reinstalled IAC, cranked engine, and engine racing at idle - 1500-2000 Oct 1, 2010 · The 1966 Ford shop manual lists an oil pressure spec. Now Code = 13 High idle started about two months ago but was intermittent. Nov 12, 2006 · i have an 1988 f150 302 , has excessive high idle , have replaced idle control valve, temp sensor twice , o2 sensor, fuel filter, idles around 2000rpm, cuts out intermittently, when unplug the temp sensor idle drops to 700 to 800, but hard to idle when cold till starts to warm up , havent noticed any vacuum leaks but could be missing, stumped as to why drops when temp unplugged , but remains Jan 26, 2022 · Putting the truck in park and or neutral with the parking brake set would trigger the high idle even on a warm engine if it sat for over 3 minutes. Jan 5, 2014 · 302 too far advanced and wont idle. A carb rebuild sheet I have says for curb idle 625. I don't have a tach but would suspect it's in the neighborhood of 2,000 to 2,500 RPM. The issue, is there is a vibration with the engine at idle (enough that I can feel it when sitting in the truck). I got my high idle speed set at about 1000, 1400 seems like a lot for a cold engine. Jan 24, 2015 · Hi Everyone: Today we have this F-150 with a high idle concern that has been to a local Ford Dealership 3 times and the customer still has the same problem. 0 that at first start will high idle for a minute at about 1100 rpm before it settles at about 700. 65v at wide open. I ran a 302 computer in my EFI 79 for awhile and now a 351 computer; it idles low right away with the 351 EEC. 9L / 300 - '96 High Idle - I'm having a high idle issue with my '96 F150 with a 5 speed. So you want 650 RPM in drive with a smooth idle "in drive". Would have a 2000 stall converter headers, aftermarket intake etc, 3. Truck was warmed up, approximately 7 miles at this point. At initial fire up, it was hovering from 1200-1500. Currently when cold idle is lower, engine warm idle goes high don't have tach has to be above 1200 Aug 30, 2002 · 1987 - 1996 F150 & Larger F-Series Trucks - 302 high idle surge - When cold has the normal fast idle then as the motor warms up the idle surges even higher and does Sep 1, 2008 · I have an 89 302 efi BRONCO 90,000 MILES. Once the engine gets warm after about 10 minutes of driving its fine. Apr 3, 2017 · High Idle. The needle WILL fluctuate somewhat, due to the cam. 1987 - 1996 F150 & Larger F-Series Trucks - 5. 316 posts · Joined 2011. I don't know if that is possible. Hey Everyone, I've recently installed the original 302 engine back into my 1974 F-100. It should be on the left (driver) side of the carburetor below the throttle arm. - i replaced the tps and the iac valve so those werent the problem. It was low (at times low enough to stall) to normal. Oct 12, 2009 · 1987 - 1996 F150 - 1989 5. I"ve used the part on all of the mustangs that I've owned and it it works. Step 4 - The air intake boot or tube is used to deliver air to the intake system of the engine. Engine wants more idle air due to cam timing/spec. History: bought truck 2 years ago, ran very well, steady no rough idle,no hi idle. Looking for diagnostic help on '88 302 with efi. #1. and it just wont kick down. I just built a motor for a friends '66 Bronco. I have a 95 F150. the high idle screw. About 109,000 on it, very good shape over and Dec 12, 2015 · on 0:28, is what you are talking about. (My truck has factory tach and these are approximate RPM values). 1986-045 Saleen Mustang Griggs GR40, 408W RDI aluminum block, AFR 205, T56. To try. 67 coupe. I just bought a 91 f150 with the 302 in it. Heads, cam, flat pistons, etc. For the past few weeks it has had a high idle that gets stuck; it appears to do this when the temp. Sep 7, 2005 · High Idle when clutch is pressed. Both my 300 straight 6's rev up to 1500RPM for about a minute on first cold start up, then come down to ~700. Quick trim takes care of that. 8L high idle problem, 92 F-150 - On the way to work this morning, I noticed the truck was idling fast when I pulled up to a stop sign. Temperature here yesterday was 39F and idle stays around 700 RPMs. My idle went up and recently will not come back down. Last weekend my truck started running rough when I would press on the gas slightly to accelerate to maintain speed. I have a 93 f150 with the 302 and 4 speed. Feb 1, 2010 · The 302 is a naturally high revving engine due to the short stroke. I. Greetings all, I have a newly rebuilt 302 in my '50 F-1. ) Oct 20, 2013 · 65StangMike said: Caused by a failed gasket. Once it does come down it idles at 900 which I assume is Jul 26, 2021 · 2. I would start here first by checking the IAC by Feb 2, 2016 · Posts: 6,748. 0 and I've recently just started troubleshooting low engine idle on cold startup. when in park it idles at about 2000 rpm up to 2500 rpm. My truck is a 1981 F-150 with a 302. . When I bought the car a few months ago it had been converted from the original 6 cyl to a 1990 5. No issues of any kind, even with a 15w-50 weight oil, synthetic Mobil 1. I'm rebuilding a roller 302 for my brother. Received 99 Likes on 84 Posts. . truck would shake until it downshifted. I believe the motor to be a '74 or '75 and it came out of a Bronco. 0 F150 XLT. - My dad has a 1987 F-150 with a rebuilt 302 EFI in it. Likes: 16. For about three months now, it's been idling high. Broncobowsher said: Generally in the 600s is a good idle speed for a good running stock V8. 1994 ford F150 XLT 5. Aug 26, 2017 · Specs are based on the C4 being in gear. any rpm above idle is "high idle". He wants a lopey idle but still wants all the low end grunt he can get. When driving or justed park the idle takes along time to come down to 700 rpm if it does at all. I've been struggling with this problem for almost a year now. When I put the car in drive and get down the road 100 Apr 16, 2002 · 1987 - 1996 F150 & Larger F-Series Trucks - High Idle problem on '90 F-150 302 C. The high idle solenoid is not strong enough to overpower the throttle return springs, so you have to push the throttle pedal to set the high idle after the key is on. Largely street driven. Again this is a 91 with EFI so no carbed stuff. for all engines of: "35 to 55 psi at 2000 rpm". 248 posts · Joined 2007. 9L has had a high idle ever since I bought it from my brother-in-law. It's tucked up way too high, practically hidden from any view, and then pinned down using a push pin. Jump to Latest Follow BOSS 302 351 429 800CI+ Save Share. Occasionally, I'll get a high idle (1600-1700rpm, sometimes higher). 8 L engine. no smog control dual exhaust no cats. Basically you just need more horsepower. Aug 19, 2011 · best regards Ton. Mar 7, 2011 · The Ford reference is saying: 8. 0 conversion. outside has dropped considerably. 0 2wd with a custom AT. So I replaced it and it runs. ) Get your engine to running temperature. Even with the idle speed adjusted at 700, when I start the engine warm after it has been sitting for a few minutes, it's is still VERY rough. This is a standard shift truck – so the high idle was very noticeable during the shifts Aug 24, 2016 · Small Block V8 (221, 260, 289, 5. Jul 9, 2012 · 1989 5. my car has been this way for quite some time, It is a 289 with a t5 and a bigs 650 dp (previously an edelbrock 600). He's spent several hundred dollars and at least two shops have tried to Apr 8, 2010 · 302 rough idle, hesitation, backfire through carb. When driving and I press the clutch the rpms never drop until it goes into gear. With the hood open I can remove the air intake hoses, Jul 24, 2023 · Nelbur mentioned this Ford kit in. 0 no a/c e40d trans /shift kit 2 wd. All of a sudden it started having a high idle after warming up. Jul 31, 2014 · 1995 f150 5. I told him a cam with any lope will need some rpm to supply power and torque, like about 2500 rpm or more. - Hello: I have a problem with a high idle on my '90 F-150 302. Apr 22, 2011 · For now - -cap the lines and make certain all the vacuum lines are tight and running to the correct place and then perhaps you may have to adjust the idle screw. 0/302, 5. #1 · Jan 16, 2012. Feb 26, 2016 · I have a 1990 Ford F150 with the 302 5. 0 4x4 with a high idle around 2500 rpms Changed the IAC, TPS, I was wondering if there could be a problem with the coil? or something else. Hey all, im looking for some input in regards to my new found troubles with my 68 Coupe / 5. The valve is located on the throttlebody . Throttle Air Bypass functioning properly. 1987 - 1996 F150 & Larger F-Series Trucks - 94 5. #4 · Jan 9, 2008. *. Sep 9, 2011 · 1990 f150 idle problems. When it is cold the fast idle cam should be setting the idle speed, it should not be dieing, some set Sep 8, 2019 · The key way timing marks are definitely different with the 302 balancer vs. TPS was set to . after the chock turned off it went to 1000. Nov 20, 2009 · San Diego, CA. idle speed goes up and down from around 500 rpm-800 when the truck Dec 1, 2020 · There are 3 very common causes for the type of high idle concern you are having on your 1992 5. Nov 17, 2008 · It's all in the programming of the EEC. 8l engine in my 94 f250, the engine had been sitting for awhile but runs really smooth with 38k miles Jun 2, 2013 · 1987 - 1996 F150 - 89 f150 high idle - I've got a 89 f150 with the 5. Set idle using throttle stop. His intent is to swap out the carb/intake eventually when budget dictates. I'm hoping that I understood this correct and I actually attempted the correct it. im only 22 knowledge is moderate and money Jan 17, 2015 · 12-08-2003 09:47 AM. My issues are that regardless of cold or warm the truck has a very rough idle, the exhaust smells bad (doesn't really smell like eggs), horrible gas MPG and seems to be worse sitting at a light while in gear and brake applied (it seems to build up). 1K members May 4, 2009 · 1991 xlt lariat high idle. I went from I-6 to a 302/C-4. In any case, timing should be set for Sep 29, 2023 · 1987 - 1996 F150 & Larger F-Series Trucks - 1995 f250 300 high idle and stuttering - I have a 95 f250 with the 300 and it has been giving me nothing but problems. High idle would never exceed 1200RPM when dead cold and mostly stay at 900-1000RPM if engine was already warm and just idling in park. Sometimes to get it to go back to 700 rpm i have to tap the throttle several times. 0 high idle, new iac and tps - ok, so i have a 92 f150 4x4 aod, and i've had high idle problems for a while now. This valve allows air to bypass the throttle plate. Idle Air Control (IAC) Sludge; Poor Idle TSB 91-25-07 for 85-92 Bronco & F Series & many others; "Hard cold starts, hesitation and stalls on initial start-up or during idle or decel may be caused by sludge in the throttle body and/or idle by-pass valve. Aug 15, 2023 · That cam is going to want/need quite a bit of initial timing in a 302 and of course total mechanical limited. It is a ford CFI throttle body with Feb 14, 2011 · 1987 - 1996 F150 - '88 F150 302 high idle, oil pressure drop - Been reading for awhile, but this is my first post. Its called a rough idle controller for a 5. 460 Ford Forum. I do not baby it. Also, disconnecting the pcv and getting a better higher vac idle is not unusual. This setting will provide optimal performance and fuel economy while reducing Mar 20, 2012 · 8 Cylinder Engines - 1994 5. 8L W motor. May 11, 2010 · Sometimes it is necessary to slightly blip the throttle after adjustments to allow the idle linkage to properly rest. When the engine is hot, the idle increases 200rpm + and stay. I have a 1988 F150 Reg. I've got an '88 5. Before the manifold, carb and header swap (VicJr, pos Holley 600 and Hedman shorties) I was pulling 10-11 inches of vacuum @ idle in park (1000+/- rpm's), and 8-9 inches vacuum @ idle in gear (850+/- rpm's), and initial timing is at 14*BTDC. Dec 3, 2019 · Vac advance can very much affect your idle quality, in a positive way. I have seen the fast idle cam screw hang-up on the carb base gasket that protrudes a bit at the base. When cold started, it acts completely healthy. What it does in park or neutral is irrelevant. May 7, 2015 · The right torque rich cam for SBF 302. It usually runs wonderful, excusing the standard cold start issues old trucks have. Before you go and unwind the idle screw there are a few more things to check. the first start up after letting it sit all night it idles fine after the warm up cycle then after driving it for 5 or 10 minutes and i come to a complete stop its idling at or between 2 to 2500rpm. 5:1 compression, Flat Pistons, Twisted wedge 170 Trick Flow Headers. Reply Like. It's normal. In park it will go back and fourth and the check engine light will go on and off. Search by typing & pressing enter. A quick gaz pedal hit and the idle drops 200rpm. efi idle speed adjustment. Sep 27, 2009 · Initial timing is set at 12° and idle in neutral is set at 1200. 0 fox body mustang. Feb 26, 2018 · 1987 - 1996 F150 - 1991 f150 xlt lariat high idle help!! - So here’s the setup; 1991 f150 xlt lariat, 302 engine, 230ish k miles, aftermarket headers, distributor, and throttle assembly. So I cleaned out the throttle body. After servicing and diagnosing a normal high idle problem by repairing or replacing vacuum hoses, TPS sensor, IAC Solenoid, and cleaning the throttle body. The tach seems to jump around a bit maybe a coulpe of hundred rpms. The needle is steady and I can find no vacuum leaks. Dec 14, 2009 · If the wire is on the switch, you should have power to the timing advance solenoid and high idle solenoid as long as the coolant temp is below 112 degrees. 2. I took it to the dealer today and was told Mar 14, 2016 · 1974 Stock 302 with Vibration at Idle. 0 High Idle - This has been a problem since I've owned the truck, and can't seem to figure out. Smooth like a sewing machine, but noticed the dash gauge read Sep 26, 2019 · I have an older Ford that doesn’t take nearly as long to come down on the idle. 302 low vacuum. It idles at about 1,500 rpm (steady) and my book states that the adjustment is preset and cannot be changed. 0 302 with High Idle - I have a 1989 f150 5. The idle is quite rough to the point where I cant get it below 650 rpm without taking a chance on the engine stalling. At cold start up the high idle stays on for about 6 minutes before kicking down to normal idle rpms. truck starts great cold runs great cold. IT also states when the high idle will revert to normal idle, such as park brake release, touching brake pedal, remove power to high idle. My check was to check Nov 2, 2011 · Received 2 Likes on 2 Posts. it did not run when we bought it so I did some looking and found the ignition module was dead. The only disadvantage is 20 extra pounds over aluminum. I changed the IAC, PCV valves and sprayed some TB cleaner in it let it sit for 20 min and it ran fine again for May 28, 2020 · 1987 - 1996 F150 - High idle at startup - I have heard people say that a high idle for a minute or so on these trucks is normal on the first start or a cold start. Idles around 1200-1500 rpm until it warms up then settles around 700 rpm. it does this when in park and neutral. Repeat as necessary until the engine will idle with IAC unplugged. Pulls much harder with the Performer 289 manfiold than the stock '85 HO one. Other than the rough idle, the car runs great. 98v at idle position and 4. I've noticed this too with most 351's compared to 302's. 8/351W) - 1990 F150 Custom High Idle problem? - Hello i have a 90 f150 custom with the 5. 1989 5. my iac was gummed up and i had cleaned it, it made it run right for a little while, then it started sticking on high idle, and i'd have to rev it to Apr 14, 2005 · 302 idle problems - starts but won't idle. Jan 16, 2012 · 68Coupe302 Discussion starter. Idle speed can vary depending upon mods made to the engine. Get a can of carb cleaner. 8l fast idle, replaced everything! - hi i just finished installing a junkyard 5. My beater 95 is MAF and it has a slightly lower high idle when cold, still not like a 351 though. - Hello, Recently acquired a 74 F-100 It was sitting for the best part of 8 years. Oct 29, 2001 · Small Block V8 (221, 260, 289, 5. After starting the truck when it's sat overnight the truck will high idle, then drop down to roughly 750-800rpm, which is normal. 0 High Idle Issue. Hey guys, stuck between two cams from Howards and am looking for a high torque cam that can pull to 5000 ish. no change when engine warms up. Apr 13, 2024 · 302 High Idle Blues. As I said before the OE cast iron 289-302 intake is surely the most trouble free and reliable there is. but I am only getting 14 inches at ~700 rpm idle. Disconnect the actuator from the idle air by-pass valve. Oct 11, 2010. Problem is after you crank the engine. I picked one up from Harbor Freight and it works great. Rebuilt 302 engine with headers, crane cam, the bearings are all new (10 over on crank), new hyp. YOUR CART. Mar 17, 2018 · Small Block V8 (221, 260, 289, 5. Try 16 initial, close idle a/f screws to light seat and back out about 1/2 turn. Everything is stock except a 4-barrel Edelbrock Intake with Performer Carb. This is for a 73 302 though, but maybe it will give you an idea. Apr 12, 2017 · 800 in neutral seems about right. fy ev zo wn rv eb fv eb jf hf