sts man Posted January 24, 2005 Report Share Posted January 24, 2005 A few days ago I noticed the idle was a little high about 1200 rpm I know normal is about 700rpm.After I turned the car off when I got to the store.Anyway when I left I turned the car on, the display where it tells you outside temp ,gas range etc .service idle control was flashing. What does it mean? And what do I need to do to fix it? can it hurt anything to drive it in the meantime? Thank You Link to comment Share on other sites More sharing options...
Ranger Posted January 25, 2005 Report Share Posted January 25, 2005 Probably need to clean or replace the ISC (idle speed control) valve. It should be on the side of the TB. Link to comment Share on other sites More sharing options...
sts man Posted January 25, 2005 Author Report Share Posted January 25, 2005 I cleaned the TB about 2 months ago, I'll clean it again. I'll keep you posted. Link to comment Share on other sites More sharing options...
Scotty Posted January 25, 2005 Report Share Posted January 25, 2005 I cleaned the TB about 2 months ago, I'll clean it again. I'll keep you posted. I was getting Service Idle Control for a couple of months, what was happening was that she was hanging up and idling in the 1,100 to 1,200 range in DRIVE , I could cut it down by putting the selector in N, and quickly flooring it and releasing the accelerator quickly. Like Guru said, a really good TB cleaning fixed it, a ridge had developed where the plates contacted the throat holding the plates open. Clean the plates, their edges, and the throat all the way around, I used GM upper engine cleaner, a tooth brush, a mirror, and a rag. It took multiple cleanings to get it right, one of these warm days I plan to take the TB off to clean it right... Link to comment Share on other sites More sharing options...
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