so i have figured after about three months of trying to find the problem i believe i have found it. so before my car warms up it runs just fine the idle and everything is perfect then when it gets warm my idle becomes very rough and almost kills the car and when i start to accelerate it stumblesacting like it is misfirning. i found out that it could either be my idle air control valve or fast idle air valve. which one of these is the most likely problem?

 

IACV

 

ok sweet so these sound like cause of this then? im just wondering cause im sick of buying part after part to fix it.

 

yea and also check for vacuum leaks

 

i cant find any so far it just started one day and got worse so im pretty sure its that now. thanks man