RPM jump

Asked by schwinck Jul 30, 2015 at 05:55 PM about the 2003 Ford Mustang GT Premium Convertible RWD

Question type: Maintenance & Repair

Cleaned throttle body, replaced air filter, replaced IAC.  Reconnected battery, let car idle for 10 minutes.  Car is driving fine.  When I start the car, RPMs jump to 2000 and rest at 750 when in park.  Just wondering if this is normal.  Thank you.

1 Answer
64,520

firebird338 answered 8 years ago

Throttle position switch maybe bad and some can be adjusted. Google that question and the year , make and model of your vehicle and it will take you to a site that will let you know if you can adjust the throttle position switch on your vehicle

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