engine is always racing

5

Asked by May 18, 2013 at 07:28 PM about the 1991 Pontiac Sunbird 2 Dr LE Convertible

Question type: Maintenance & Repair

changed the throttle position sensor and is still racing. What would be the nest step to fix the engine racing?

3 Answers

241,515

Check the throttle cable, it might be binding.

10,235

If it's not the cable you could try the idle air control valve. If the plunger is stuck open you will have a higher than normal idle.

94,905

All of the above and check for vacuum leaks, an unmetered air leak can cause a very high idle.

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