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idle problem
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  1. 5.0/5.8 Engine Tech
    91 foxbody . 302 with 60lbs injectors , 90mm maf , vortech v2 . B303 cam advanced timing to about 14 degrees per tuner and fuel pressure at 32 psi with vacuum on. Has a sct chip . Problem I'm having when I start er up fires right up rpms go to about 1200 then come down to about 1000 chills for...
  2. Drag Racing
    Hi all First off let me state I am new here and need help with a problem I just cant figure out. So I have a 94 cobra and I am having issues with it idling. When I start it up it takes it time to find its idle by going up and down a lot. Most times it will go up and down a few times and then...
  3. 5.0/5.8 Engine Tech
    OK! First time actually doing this because I cannot take the mental stress this damn car is giving me! I have a 86 Speed Density with the following mods: gt40p heads ford racing shorties 70mm tb and egr spacer gt40upper and lower gt40 3/8 spacer bbk cai electric fan alum radiator egr delete ac...
  4. SVT & DOHC
    I have a 98 cobra just rebuilt the engine. But i need help i had a custom tune made already but when i drive, it some times idles but sometimes wont. I already replaced the IAC, and checked for vacuum leaks. It also hesitates when i roll onto the gas, rpms drops and the car dies. ANY ideas, I...
  5. SVT & DOHC
    hey there fellow mustung guys.. i recently purchased a 98 mustang cobra as my first sports cars ive been into crotchrockets... Anyways..... when i pull up to a stop and take it out of first it wants to idle at 1,200-1,400rpm for about 5 seconds before dropping to 900rpm. at one point it was...
  6. GT & SOHC
    Ok, so I have been having this problem with the idle being very erratic, it'll surge, and I have found out that the A/C was the culprit. Every time I would turn on the A/C, the car would surge very badly at idle, sometime's going down to 0 rpms, then returning to 1000 and back to 200 rpms, then...
  7. 5.0/5.8 Engine Tech
    i cant the car to idle below about 900 without it dieing.. and after i get it to that point i kill it and try to start it again and its pretty difficult.. im thinking vacuum leak but i quit for the night anybody else got any ideas?
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