Sticking speedometer

Discussion in 'Troubleshooting & Diagnosis' started by 70L34, Apr 26, 2018.

  1. jstich

    jstich 70ZRS

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    This thread is over a year old, Did you ever get it fixed? I'm having a similar problem.
     
  2. cdcrum

    cdcrum New Member

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    Yes, a follow up would be great.
     
  3. GPN

    GPN Veteran Member

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    Do you know if a 150 speedometer (pre 1979) will fit in a 1979?
     
  4. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    I believe it will.
    There should be no recalibration required with different speedometer gears.
    (That’s already done for you internally to the speedometer.)

    However... The 150 mph speedometer gauge needle will be different that the rest of them in the 79 cluster.
     
  5. GPN

    GPN Veteran Member

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    Good information. Thank you
     
  6. GPN

    GPN Veteran Member

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    Can I tell if my car was original manual transmission from Vin code?
     
  7. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    Not from the VIN code.
    If you don't have a build sheet... Look at the floor under under the console.
    The transmission hump would most likely show signs of modification if it was originally a manual transmission car.
     
  8. GPN

    GPN Veteran Member

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    First of all, great idea to remind me to look for my build sheet (I stashed years ago)
    Found it
    There it is, M21 4-speed trans
     
  9. GPN

    GPN Veteran Member

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    It’s still a head scratcher why this car has a 2 piece speedometer cable w/ a manual trans and NO cruise control
     
  10. GPN

    GPN Veteran Member

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    Sent speedometer out for rebuild—-still bouncing. Thinking only thing left is to replace lower cable. When my engine was out, it looked as though the lower has to be replaced with casing—-has anyone done that?
     

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