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  1. #21
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    Default Interesting behavior

    So i went out i the morning and started my car and it was really cold, around 20F maybe and it idle's lower when its cold 1200-1300RPMs and around 1700 when it was 50 60F+ This dont make no sense🤔

  2. #22
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    Default Re: Interesting behavior

    Quote Originally Posted by GT2000 View Post
    So i went out i the morning and started my car and it was really cold, around 20F maybe and it idle's lower when its cold 1200-1300RPMs and around 1700 when it was 50 60F+ This dont make no sense🤔
    I'd be suspicious of an intake vacuum leak that is keeping the idle high due to un-metered air entering the intake. Perhaps you've already checked that, but one of the simple ways to check for an intake leak is to introduce smoke to the intake and observe if it escapes. On the GTP I recently worked on, there was an intake gasket leak that was was found using this method. After all the issues were addressed, the engine now idles at 700-750RPM when warm, cold start idle is about 1200 RPM.

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