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high idle upon start, then falls and hunts. AMM? 200 1991

posted by  someone claiming to be townes on  Fri Dec 31 13:00 CST 2010 [RELATED]

I just cleaned the IAC and there was a bit of gunk in there and idle was immediately better. I also discovered a very loose spark plug. I'm pretty surprised the mechanic didn't even look at the plugs or even disconnect the AMM or IAC for troubleshooting purposes but....
I generally do all this stuff myself but my wife needed the car a.s.a.p. and I didn't have the time to troubleshoot.
I'm crossing my fingers that it was a dirty IAC.
Next up is the 84 wagon that was running perfectly but died on my wife when she got in it to pick me up at mechanic's after dropping off the 91.

Cheers and thanks for the tips, Kirk S.






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