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Erratic Idle

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Old Feb 19, 2007 | 03:33 PM
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Default Erratic Idle

I have a 1999 Chevrolet Camaro SS, and it has roughly 75,3xx miles on it. The spark plugs and wires were both replaced 60,000 miles ago (MSD 8.5mm wires with TR6 plugs at .040" gap).

My Service Engine Soon light shut off today for some reason (lack of O2 sensor activity Bank 2 sensor 2) and all of a sudden when I put the car into neutral when slowing down, the RPMs dip from the usual 700-800 range to 500-300 range. Could it be the IAC or is it just time for new plugs, or is it time for a new O2 sensor?
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Old Feb 20, 2007 | 12:47 AM
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sounds like the o2 to me, they will do that to your idle because your cars confused on what its doing
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Old Feb 24, 2007 | 12:14 AM
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I'm having a problem much like that, only mine won't start correctly. Sometimes it starts just fine. Others i get crazy dash/electric wierdouts throughout car and when it starts it wants to die really bad. Drops RPMs to 400-500 range. Exhaust smells massively rich. Check engine light goes out when it should be on (O2 sensors removed from header install also). Anyone have a clue to what I should be looking for?
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