Stalling!!

[Steven Monteith]

I have a 2000 grand prix top swapped, xp, 42lb. My compressor went out yesterday while I was driving and 10 min later my car stalled when I tried starting it after having it parked for a minute. Now its hard to start and it will not idle. Idle jumps all over from really low to 3500RPM then car keeps turning off. I was thinking it may be the compressor locking it up as well as someone on here said. I had the compressor replaced today and still will not idle. When driving and giving it gas it drives fine, but when you come to a stop and the RPMs drop down below 1500 then it starts going all over then shuts off. I put in a new Idle control valve and a used MAF sensor. still nothing. Could it be fuel pump? I have a aeroforce so what should I be looking for and what should be the readings??


Thanks,

Steven

[JEBSR]

Sounds like a vacuum leak to me. Check the "T" connector in the lower intake manifold, just below the S/C. Those like to crack and cause this issue. Don't just make sure it's plugged in, pull it and inspect. If that's not it check all the other lines. I would tell you to listen for the sucking noise while at idle, but I guess you can't do that huh.