well ive been having this major problem with my car. today it happend twice. once while i was parking the car just shut off before i finished parking. second time when i was going back home i was coming to a stop light and the car shut off before i even stopped at like 30 mph.... so it kinda seems to be doing it while decelerating. but also on the highway sometimes i step on the gas to go a little faster and it kind of bogs and then starts up again.and when it turns off it ussualy dosent start for a while or a couple of cranks. spark plugs are new. and was doing it before i changed them. just not as often. really need this fixed since its my only car...

 

Any codes?
I would get your ICM tested. You said you thought it happens when decelerating, so I'd hook up a vacuum gauge to see if you have a vacuum leak. Test your fuel pressure, that never hurts.

 

I freakin told him to test fuel pressure today at school and he refused lol

 

i cleaned the IAC and now its idling really smooth. gotta see if it still turns off though.

 

what is the ICA?

 

IAC = Idle Air Control valve.

 

ahhh i see. on my beamer it was called the ICV. silly germans.

 

where is the iac

 

I think its adjacent to the throttle body. Someone correct me if Im wrong...

 

http://shbox.com/1/iac3.jpg

 

nice. looks like you just unbolt it and clean it up a bit.

 

Yes, you can try that. Getting all the gunk off with some carb/TB cleaner usually does the trick, otherwise a new GM replacement IAC it is...assuming that's the problem.

 

yea it was pretty dirty. cleaned it with wd-40. good enuff. it idles really really smooth now.it feels weird.cant even hear my LM1 at idle anymore. b4 i could. well see tmm if the car keeps turning off though. ill keep u guys posted. might run a fuel pressure check also.

 

spun muffler bearings