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Thread: 91 K75RT tachometer erratic

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  1. #1
    Registered User
    Join Date
    Mar 2008
    Location
    Belton Tx
    Posts
    593

    91 K75RT tachometer erratic

    I have noticed a couple of times the tach jumping to 2-3000 rpm after a cold start. There is no actual increase of rpm during this tach movement.
    Is this a sign of a problem with the ignition (HES)?
    Ron

    91 K75RT ABS

  2. #2
    Registered User
    Join Date
    Apr 2012
    Location
    Los Angeles, CA
    Posts
    316
    If the engine is behaving normally, I'd guess it's more likely an electrical connection at the cluster's plug, or within the cluster.

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