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1995 Pontiac Bonneville Question: why does car idle high when cold



chris2013, Fraser, MI, March 21, 2013, 12:43

car starts right up when its cold,but at high idle(3000rpm)until engine warms up,then might not start with warm engine.Replaced ignitor coils,throttle position sensor,mass air flow sensor,and air filter.

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  • Answer #1

    Stan's Garage (143 Answers) , Dearborn Heights, MI - (313) 915-4196
    Stans Garage March 21, 2013, 13:28

    There could be many reasons that the computer is turning up the idle. It could be as simple as a vacuum leak to bad wiring and more items in between. You probably need to start with a computer scan and then move forward. If you want us to check this out please call 313-562-7022 or schedule an appointment on line at StansGarage.net. I am sure we can diagnose it and give you the answer you need.

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  • Answer #2

    Greg's Orange Auto (15188 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 21, 2013, 16:04

    go see stans they will diag and give you an est

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