High RPM's In park

2004 CHEVROLET MALIBU
98,000 MILES • 3.5L • V6 • 4WD • AUTOMATIC
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KYLERCRAM02
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Cold started my car after a few days of sitting because i couldn't drive it... (Some type of problem with CV axle or something... Looking into it) anyways.... It was jumping up to around 1,300 RPM's while in park. But as soon as I switched to drive or reverse it went back down to normal.. Around 600.
Jan 10, 2020 at 10:49 AM
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ASEMASTER6371
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Good afternoon,

This could be caused by a dirty throttle body plate.

I would start by having the throttle body cleaned of all carbon build-up.

https://www.2carpros.com/articles/throttle-actuator-service

Are there any codes set?

I attached some information for you on cleaning the throttle plate and how the idle system is controlled.

Roy

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Jan 10, 2020 at 11:57 AM
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KYLERCRAM02
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Throttle body would make reverse and drive higher in RPM too... Not just park though... Right?
Jan 11, 2020 at 9:00 PM
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ASEMASTER6371
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Correct. the ECM controls the operation of the motor on the throttle body.

Roy
Jan 12, 2020 at 1:05 AM