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328 gauges

Discussion in 'Technical Q&A' started by zebra308, Sep 18, 2005.

  1. zebra308

    zebra308 Formula 3

    Jan 14, 2004
    1,307
    All Flimmits
    Full Name:
    Ruffis Leekin
    #1 zebra308, Sep 18, 2005
    O.K. I did a search and didn't find what I was looking for. A while back I remember reading a post concerning the jumping readings of the tach,speedo,etc.

    Last night when I turned on the headlights, all of the gauges went into Bermuda Triangle mode. The tach began to jump a few thousand rpms when I reved the motor. The speedometer ( which never reads accurately to begin with) added a few mph.
    The most alarming thing was the temp. gauge. I just had the radiator repaired and figured the car was going to overheat due to an air pocket/ bleeding issue.
    I never got a reading over 195 until last night. Typically it ( temp gauge) would stay to the left of the center reading. After I turned on the headlights it never went under 195.

    Has anyone else experienced this ? What's the cure?

    Thanks,
    Will
     

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  2. Steve

    Steve Formula Junior

    Nov 1, 2003
    901
    Seattle, WA
    Full Name:
    Steve Jenkins
    #2 Steve, Sep 18, 2005
    I experienced this with my old 87 Mondial (sold it years ago... it's probably a parts car by now). I fixed it by replacing the fuse box.
     
  3. Mark 328

    Mark 328 Formula Junior

    Nov 6, 2003
    510
    Orange, Ca
    Full Name:
    Mark Foley
    #3 Mark 328, Sep 18, 2005
    Will:
    It could also be a bad ground. When the lights go on they are "sucking" ground from other circuits. You may want to try running some alligator clip supplimental ground jumpers first at the headlights then in the dash--can't have too many grounds and if there are not enough, DC circiuts will ground through another circuit.
    If a temporary ground strap removes the problem, then you may want to find some of your existing ground posts and clean/reconnect them. Bad grounds can cause a lot of electrical problems.

    Mark
     

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