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Thread: bad idle when cold

  1. #1
    Ride
    VN SS

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    Default bad idle when cold

    hey guys,
    my vs v6 statesman has just started playing up.

    when engines cold, ill start it up, everything seems fine but the idle drops and it sounds like its lumping over. give it a rev and its fine, no stutters or anything.

    it drives perfect but i pull up at a set of lights and it'll idle perfect for about 15 secs then the idle sorta jumps (almost like the air con just cuts in) and it starts idling rough agian.

    on operating temp its fine.
    no faults are coming up either

    any ideas would be appreciated
    Last edited by vnss_1; 19-09-2009 at 06:52 PM.

  2. #2
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    vs clubsport

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    Default

    Idle control solenoid would be my guess
    Float like an elephant sting like a tree clubsport hits what doug does'nt see

  3. #3
    Ride
    VN SS

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    thanks mate. was thinking that, might pull throttle body apart this weekend and give it all a clean.

  4. #4
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    VS l67 statesman

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    What Clubby said or a small vacuum leak somewhere check for cracked hoses or if any have come off especially the one on the bottom of the Tb

  5. #5
    CU5H1NG is offline CU5H1NG
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    VS Acclaim

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    Default

    Quote Originally Posted by vnss_1 View Post
    hey guys,
    my vs statesman has just started playing up.

    when engines cold, ill start it up, everything seems fine but the idle drops and it sounds like its lumping over. give it a rev and its fine, no stutters or anything.

    it drives perfect but i pull up at a set of lights and it'll idle perfect for about 15 secs then the idle sorta jumps (almost like the air con just cuts in) and it starts idling rough agian.

    on operating temp its fine.
    no faults are coming up either

    any ideas would be appreciated

    I had a similar problem in my Vs Acclaim and I got told to spray my Throttle Bpdy with CRC throttle body cleaner. it costed like 13 bucks from super cheap and it solved the problem

  6. #6
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    thanks guys. pulled apart throttle body today cleaned it all up. also cleaned air flow meter. also tried a spare IAC solenoid still no change tho. thinkin maybe coolant temp sensor. also noticed today big puff of black smoke on start up.
    maybe leaky injector?
    still drives perfect just not idling smooth
    still no codes either
    what ya reckon, any ways to test injectors?

  7. #7
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    VN SS

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    getting worse today. doing it while hot too. had a sus and found a leaking injector. so theres my problem.
    cheers for the input guys

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