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idle problem

  1. 5.0L Tech
    I made a post on here a few months back trying to get my 89 5.0 in running condition and we got there, all it needed was a new ignition switch. I got a rebuilt ECU out of that thanks to my troubleshooting. Anyways, now that it actually will start, it seems to not like to run cold. This morning...
  2. Classic Tech
    Hi everybody! I'm new to this forum and forums in general. As well as fairly new to the world of classic cars. I bought a 200 straight six, 1968 mustang coupe last year with hope of restoring it. Aesthetically its in good condition, performance wise, not so much. Needless to say I've learned A...
  3. 5.0L Tech
    I have a 1988 mustang 5 0 with an e303 cam and some other basic bolt ons like distributor and intake, nothing big. I just want to know if the computer is tunable because is wont idle right .It will be idling fine a little high at probably about 900 rmp then just randomly start loping real deep...
  4. 2005-2010 Mustang Talk
    Ok I have an '07 GT with a slight off pattern shake at idle and once every few weeks the car loses power while taking off, like a cylinder or 2 were misfiring all of a sudden and lasts a few secs and then goes away. Odd thing also to mention is if it loses power and the ac was on, I notice the...
  5. Classic Tech
    I have a 68 mustang with a 302 in it. Its got a holley 750 on it. I was driving along and the car started acting funny. When the car is in park it holds 900rpm idle but as soon as I put it in gear the rpms drop down to 300. It dont stall but when I go to give it gas it runs horrible until 1800...
  6. 5.0L Tech
    Hey there, i'm new on this forum but i have a big question to ask.I have a 1995 mustang gt. about 160k miles To start off a while back my AC stopped blowing through the front vents. only through windshield defrost and bottom. I checked the hose that goes from the vacuum tree but it seemed fine...
  7. V6 Talk
    Car has a ticking noise when started and was told it was an exhaust leak but I'm mechanicaly slow so I don't know. I also started hearing a belt sounding type of wining and was told that it was a throw out bearing and now it idles at 500 in neatrul abut doesn't stay steady goes up to 700 and...
  8. 5.0L Tech
    To start this off I will be posting to many, many forums my problem. First off, Details Of Motor: Block: 302 bored 30 over Crank: Stock Pistons: Stock Cam: B-303 Heads: Aluminum Gt-40 SVO Rockers: Stock Intake Lower: Gt-40 Intake Upper: Gt-40 EGR Spacer: 70mm Throttle Body: 70mm Intake Tube...
  9. 5.0L Tech
    i have 95 mustang gt engine is stock has bbk catless h pipe with flowmaster 44s and a cold air intake changed the idle air motor the shop i took it too cant figure it out any input will be appreciated
  10. 5.0L Tech
    I just bought an 85 Mustang Foxbody with an '86 5.0 GT V8, and it's giving me some serious trouble in the starting/idling department. When I first start it (temperature is usually around 0 Degrees C), it spins endlessly, coughs, sputters, and will eventually turn over, only to stall out and die...
  11. 5.0L Tech
    recently my car has had the slight high idle problem. Before i added underdrive pulleys my car idled at 850rpms cold and when it warmed up to operating temperatures it sat around 900rpms. When i installed my underdrive pulleys the idle dropped to 750rpms cold, but still jumps to 900rpms when...
  12. 4.6L Tech
    About 3 weeks ago my lower intake manifold gasket and my water pump went out at the same time. Great. I had to buy a replacement intake manifold and a gasket set I think I put that back together fine. The car ran great for the last two weeks but I occasionally I would see a little fluctuation...
  13. 5.0L Tech
    i have a 1987 mustang gt and sometimes when i start it the idle goes to 2 grand:didnotdoit: and i dont know what the deal is with it:im confused:. and another things its stock and im putting bbk shorty headers and a bbk ssi upper and lower intake on it with fuel rails and 70mm throttle body how...
  14. 2005-2010 Mustang GT Tech
    I'm still having issues with my idle rpm's fluctuating after installing my Paxton supercharger from Brenspeed but now having other issues!! Ever since I installed the off road pipes a few weeks ago I'm having a poor cold start, the rpm's don't pick up to the proper idle speed quick enough. Any...
  15. Classic Tech
    Hello, I recently purchased at 1966 Mustang Coupe with a 302 engine in it. It run good, at least I think it does. The trouble I'm having is that in the morning I have to sort of heat up the engine for it not to stall out. And on top of that, I replaced the gaskets on the carburetor (motorcraft)...
  16. Mustang II Tech
    i am a new member as of today. i am working on a 1977 mustang cobra 2. the problem is a lot of hoses were missing when i got it, so i went out and got some hoses but now i just need to know where they go. if anyone could help i would appreciate it, anything like a vacuum diagram for this car or...
  17. 5.0L Tech
    My 1984 5.0 was stalling as I was driving down the road. I let it sit a few minutes and it would start again. Definitly a fuel problem, not electrical. getting fuel to the mechanical fuel pump on the side of the engine, the fuel pump is pretty new, but when it stalled there was no fuel in the...
  18. Introductions
    I got a 2001 Ford Mustang it was running great even with a check engine light on. once i got around to fix the problem which was the EGR valve pressure sensor my car started idling rough it feels like it wants to turn off at times. When i installed the new sensor i disconnected the battery and...
  19. V6 Tech
    I am an Auto Tech Teacher at a High School, and have been repairing cars for 27 years. The 1985 Mustang I am currently working on, I replaced the engine with a used unit(3.8 v-6), after starting car the idle will go to about 3000 rpm after 15-18 seconds of running and stay there. I have a...
  20. Classic Tech
    It's a great car. One of my dream cars, to be honest. I'm blessed to have aquired it so young. It runs and drives great. A lot smoother than I thought it'd be. The only issue I'm having is when it's idle. It's a little rough. It keeps up at stoplights and all, but slowly going over a speed bump...
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