Why is my car idling too fast

Asked by Guru9429W8 Sep 21, 2020 at 04:34 PM about the 1992 Ford Mustang LX 5.0 Coupe RWD

Question type: Maintenance & Repair

When I get in my car to start it up it
revs up to 3000 RPM's by itself. It's not
idling on its own without revving up
and I have to turn the car off because
stepping on the gas pedal doesn't
correct it. I replaced the throttle
position sensor and didn't help anyone
else have any idea. It's a 1992 Ford
Mustang 5.o

2 Answers
41,230

TDolby answered 4 years ago

You have to periodically clean the ICS and throttle body with throttle body cleaner. Check online on how to do it, it gets full of carbon over time.

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