Question about 1992 Buick LeSabre

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Drive car for 5 min put in park has high idle like 1200 to 1500

Turn off restart idle fine

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You need to scan the computer and drive it with a scanner on it. Check for codes and watch the Throttle position sensor readings. It sounds like a problem with the tps or Idle speed motor.

Posted on Mar 01, 2009

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Posted on Jan 02, 2017

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