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Thread: How to adjust cold start idle speed.

  1. #1
    Registered User
    Name: Raymond


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    Angry How to adjust cold start idle speed.

    My 2000 HDF150 recently developed a cold start problem. At cold start-up, idle races to 2000 rpm for approx., 10 seconds before dropping down to a reasonable 1200 rpm. Normal idle occurs after 2 mins. Any advice on how to adjust the cold start would be appreciated.

  2. #2
    Registered User
    Name: Rich

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    Try cleaning out the iac

  3. #3
    Registered User
    Name: Raymond


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    Thanks. I'll try that, although, with only 9k miles, it's hard to think it would be clogged.

  4. #4
    Oki 916's Dad NHTOC #103
    Name: Slick

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    9K on a 2000. must be a story behind that

  5. #5
    Mobbin around the NW
    Name: Derek

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    Might just be sticking seeing the truck isnt driven much. Its gotta be something mechanical, to adjust the idle it has to be done with a tuner. I guess there is always the possibility the computer is going, but I doubt that.

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