86 Buick Regal T-Type w/ idle issues

Asked by Aug 16, 2012 at 10:16 PM about the 1986 Buick Regal T Type Turbo Coupe

Question type: Maintenance & Repair

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?

3 Answers

7,035

fuel filter? check spark plugs & wires too. power feels strong on acceleration? any fuel smell from the exhaust?

1 of 1 people found this helpful.
238,095

When you replaced the IAC, did you clean the throttle body plate? Check for vacuum leaks too.

135

Check your EGR and PCV valve.

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