2002 impala won't idle down
5

Asked by Tasha1980 Mar 15, 2016 at 11:14 PM about the 2002 Chevrolet Impala LS FWD

Question type: Maintenance & Repair

When I crank, drive, put it in park, reverse, it won't idle down.
When I drive it is have to keep my foot on the brake so it won't
drive itself and that's scary!!! Please help me, I'm about to give
up.

7 Answers
1,705

Rocklobsta answered 8 years ago

Is your check Engine light on? Does it idle high as well or only in gear? It's more than likely a pretty big vacuum leak or TPS (Throttle Position Sensor), and possible the IAC (Idle Air Control) Valve. If there is no check engine light, have a smoke machine hooked up to the intake somewhere and you should find a vacuum leak.

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