my 1996 GL ATX ideling very wierd, when i start the car after it sat there allnight sometimes the RPM will jump to 1500rpm and start increasing to 2500rpm and just sit there. when i put it in drive after that it jumps back down to like 1000 or 1500rpm.
also when i drive around and come to stop sign or stop light sometimes it had very hard time ideling and sometimes it even stalls.
can some one please tell me what could cause this. I changed fuel filter, O2 sensor last year, i have aftermarket air intake(some people say this could cause this w/o resseting my computer).
I bought new PCV valve and bou tto change it today. would PCV do any difference?
please help bc its gettign very annoying and once i almost got into accident bc my car stalled while i was driving downtown and my wheel locked and break booster turned off.
PLEASE HELP
