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Thread: 1.8 CL erratic idle problem

  1. 28-03-2011, 08:28 PM #1
    VR6child's Avatar
    VR6child
    VR6child is offline Volkswagen Enthusiast
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    Jan 2008
    Location
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    1.8 CL erratic idle problem

    I have an annoying problem with my 1.8 CL mk3.

    Most of the time when the car is idling, it surges between about 600-1200 rpms. It will quickly surge up to 1200, idle there for a few seconds, then suddenly drop to 600 and surge back up again. Over and over.

    I will make a video of what the tach is doing if it helps explain better.

    I pretty much have no idea where to start as I am more familiar with VRs. Any help would be sweet.

    Cheers

    Tim
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  2. 28-03-2011, 10:21 PM #2
    KKK VR6
    KKK VR6 is offline Volkswagen Enthusiast
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    Jan 2011
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    Rooty Hill, Sydney
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    im sorta guessing but it might your MAF, also check the pipe after the MAF for any cracks. might be sucking in unknown air.
    hope that helps
    Garage:
    VR6
    XR6
    R36
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