IN PARK THE ENGINE WILL IDLE RAPIDLY UP AND DOWN...

2003 Hyundai Elantra

Tiny

Anonymous

March, 21, 2013 AT 12:32 PM

In park the engine will idle rapidly up and down, I have changed the TPS and no results, I was told it could be the coil pack, so I took a spark plug wire off one at a time and replaced while engine was running and the car idled correctly with spark plug wire off at the coil pack, so could this be a faulty coil pack, thanks

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1 Answer

Tiny

hmac300

March, 21, 2013 AT 1:49 PM

Try cleaning the throttle plate on both sides as well as iac hole if you have one then if still doing it check fuel pressure and check for vacuumleaks.

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