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Thread: Erratic speedometer?

  1. #1
    Join Date
    Aug 2014
    Posts
    76

    Erratic speedometer?

    Hey guys. As title. I have an erratic spedometer.

    It has always had problems jumping around up to 60mph at random, whether the car is moving or not.

    I have already swapped out the VSS. any other places to check?

    Neill

  2. #2
    Join Date
    Jul 2005
    Posts
    380
    Good morning

    I would check:

    the instrument cluster electrical large gray connectors for suspect corrosion in pin wire(s), loose connector, and or chafe wire harness.

    http://www.supercoupeperformance.com...peedo-pic2.jpg

    http://www.supercoupeperformance.com...el-93-pic1.jpg

    the speedometer circuit board for suspect solder and or corrosion.

    http://www.supercoupeperformance.com...eedo-pic14.jpg


    If it no defects found replace speedometer.

  3. #3
    Join Date
    Dec 2007
    Location
    Salem, OR
    Posts
    6,284
    Might just be the small plastic gears in the head unit...normal for them to go out after so many years - know if they've been replaced already?

  4. #4
    Join Date
    Aug 2014
    Posts
    76
    Video for those interested!
    https://youtu.be/p9A-6VNslKc

    No idea whether the gears have been replaced at the moment.

    I will take the unit out tomorrow and check the connections. See what the problem could potentially be!

    Thanks for the pointers guys!

    Neill

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