Question about 2001 Ford Crown Victoria

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Surging I have a 2001 Crown Vic that surges only when the AC is on. It idles higher then it should whe the AC kicks in. It will also surge when I take my foot off the gas when driving on the highway. It only happens when the AC kicks in. What gives? Any ideas? Thanks

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Hi billberger2

When the air conditioner turns on, the car computer also increases the engines revs to counter the load of the air con. It should not generally be noticeable however. Will do some research to see why. :)


Posted on Jun 20, 2008

  • 1 more comment 
  • Graeme Ross
    Graeme Ross Jun 20, 2008

    There is a post here about a modification to the idle air bypass valve., an electrically operated device that allows more air through the throttle body. this device may be faulty or maladjusted and cause the symptoms that you have. You can buy a new one here.

    I am more than happy to answer
    any other questions you may have about it, just give me a hoy :) If you
    are still unsure, or have problems, then before you give a rating for this advice, please
    get back to me and we can try some more things.

    Thanks for using FixYa, If you consider the advice I have given you
    as sound, a FixYa rating is a great reward for my efforts to help
    you. Cheers.


  • Graeme Ross
    Graeme Ross Jun 20, 2008

    what an awesome listing. Heaps of info on the ol girls in here.

  • Graeme Ross
    Graeme Ross Jun 20, 2008

    Have you been able to do a diagnostic scan at all. This can help with diagnosis of a problem to do with mixture and fuel control. A faulty sensor may be causing the problem. By how many revs is it surging?



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