Buick 3.8 High Idle

Discussion in 'Domestics' started by Dennis Fast, Aug 23, 2017.

  1. Dennis  Fast

    Dennis Fast Newbie

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    Please fill out the following to ask a question.

    MAKE: Buick
    MODEL: Le Saber
    YEAR: 202
    MILES: 85000
    ENGINE: 3.8
    DESCRIBE ISSUE....fast Idle 1500-2300 rpm does it cold start A/C on or A/C off . Let it warm 3-4 minutes and key to off and restart and the condition goes to normal idle. Except in Ohio winter months then at high way speed condition of high idle comes back in cooler ambient temperatures.
     
  2. kev2

    kev2 wrench

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    start with a scan - even if the SES/CEL is off.
    Scans are often free at many part stores, post all codes someone will advise.
     
  3. LynnM

    LynnM Sr. Member

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    Check the vacuum connections on the firewall side of the engine
     

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