Deener Posted May 6, 2009 Share Posted May 6, 2009 Hi All, I have a question about my 88 GL (AT 4x4). It has a rough idle when cold. It used to start right up and idle high for a minute or so like a choke, which seemed normal but now it will intermittently idle really low and rough but only on a cold start. After I drive for a minute or so, it's fine, just the initial cold start is rough. Here's what my homework tells me I could try: Coolant temp sensor - Replace. Idle stabilizer valve - Clean it. (IAC/ISV...not sure what they are called or even if I have one) Does this sound right? If so...can anyone tell me where these parts are on my vehicle? Oh yeah...I also don't know where the PCV valve is. I tuned up the car but couldn't find that part. Passenger side/back of the block maybe? Any help is always appreciated! Dean Link to comment Share on other sites More sharing options...
4x4_Welder Posted May 7, 2009 Share Posted May 7, 2009 Idle air bypass is on top of the thermostat housing, PCV is screwed into the back of the intake. A shot of BG carb cleaner, or Seafoam will get clean up either one. Link to comment Share on other sites More sharing options...
Deener Posted May 7, 2009 Author Share Posted May 7, 2009 Wicked. Thanks a bunch. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now