My friend has a Mercury Mystique and it idles too fast. What should he have done to correct?

Asked by Oct 04, 2014 at 12:00 PM about the 1996 Mercury Mystique 4 Dr GS Sedan

Question type: Maintenance & Repair

4 Answers

254,335

Clean the throttle body and IAC valve, they can have a build of carbon effecting the idle. Your local auto parts store will sell specific cleaner to do the job. Search youtube for howto's. If that doesn't work, check for vacuum leaks.

1 of 1 people found this helpful.

What about the Throttle Position Sensor?

254,335

That can't be cleaned, but if faulty will usually trip a code /CEL.

10

The problem is most likely the Idle air control valve, If it is stuck open the engine will idle too fast!

1 of 1 people found this helpful.

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