86 Buick Regal T-Type w/ idle issues
Runs fine, except when stopped, the car idles erratically, jumping up and down in rpm's every few seconds,
sometimes shutting off completely. I already replaced the idle air control valve. Any other suggestions?
fuel filter? check spark plugs & wires too. power feels strong on acceleration? any fuel smell from the exhaust?
When you replaced the IAC, did you clean the throttle body plate? Check for vacuum leaks too.
Check your EGR and PCV valve.
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