1999 Chevy Express 1500 surging idle?
September 21st, 2023, 9:01 PM
#1
1999 Chevy Express 1500 surging idle?
Just bought a 1999 Chevy express 1500 that would not start.
Turns out it was the Passlock control module that had fried.
Bought a rebuilt one, did the relearn procedure and it started.
But now its surging hard while at idle. Looking for correct idle?
Does it have a IAC valve?
If I add gas or change gears it will die
Turns out it was the Passlock control module that had fried.
Bought a rebuilt one, did the relearn procedure and it started.
But now its surging hard while at idle. Looking for correct idle?
Does it have a IAC valve?
If I add gas or change gears it will die
Last edited by Tuna!; September 21st, 2023 at 9:06 PM.
September 21st, 2023, 9:33 PM
#2
I think you do have an IAC, but you can always check by look in a part catalog like rockauto.
give it a clean and test it out
https://blog.1aauto.com/how-to-diagnose-engine-surging/
give it a clean and test it out
https://blog.1aauto.com/how-to-diagnose-engine-surging/
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