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erratic idle

  1. 4.6L Tech
    TLDR: Replaced IAC and cleaned throttle body and MAF to stop erratic idle, and it worked for a little while, but two days later my throttle is getting stuck closed, car is shifting into 3rd at around 30mph and doesn't downshift until I come to a complete stop, causing the car to stall out. Help...
  2. 5.0L Tech
    If anyone can help I would greatly appreciate it. I have a 1990 mustang with a 302 bored .030 over. Edelbrock style intake, larger throttle body, B 303 cam, gt 40 heads and some other mods. I bought this car as is so with the specifics I'm still figuring out. Anyways here's the issue. The idle...
  3. 5.0L Tech
    Hey everyone, happy new year, im having this problem yet again, my car will be sitting at 1k rpm's and ill watch the tachometer and it will bounce to about 1800 rpm's with barely any change to the sound of the idle, it does this very often. seems more often when the heat is on, i've replaced...
  4. V6 Tech
    Hello all, I registered on these forums to see if anyone here can help me with a problem. I've been looking around the Internet for a number of years trying to find a solution but haven't been able to. When the engine of my 1997 3.8l Mustang is warm and in low idle (~700 RPMs) the oil pressure...
  5. 5.0L Talk
    alright iv got more issues than what i initially thought here's my symptoms at idle if i quickly tap the gas it stumbles quickly usually she revs about 1k once warmed up it goes down to about 700 which seems fine to me all this has just been the way the car ran up until about a week and a half...
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