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C2 Speedometer

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  • Rich Freeman

    C2 Speedometer

    Is there any way to bench test a speedometer before installing it. I have speedo & cable out of car.
  • Jack H.
    Extremely Frequent Poster
    • April 1, 1990
    • 9906

    #2
    Yes!

    You'll find there were hundreds of independent AC-Delco and United Delco located across the country and MANY are still in business. Those who specialized in doing speedo/odo repair have, in-house, the GM approved calibration/test equipment to support the work. We've got a really nice shop in Denver who's been doing this for about 50-years and it's a matter of carrying in the speedo, waiting 24-hours, and picking it up repaired and calibrated! Typical cost is $40 + parts, as needed.

    Comment

    • Rich Freeman

      #3
      Re: Yes!

      Thanks Jack

      But, Maybe I should have explained myself a little better. The speedo has been laying around for some time (It worked years ago) and I just wanted to see if I could test it at home to see if it isn't locked up. Can I spin the cable somehow to see if the Needle moves back & forth? If not, then maybe I can hook it up and lay it in the car somewhere and drive down my street.

      Comment

      • Steve Miller

        #4
        Re: Yes!

        If all you want to do is see if the needle will move, see if you can attach a cordless drill to the inner cable and run it slowly. I think I heard of people doing that in reverse - something to do with the odometer reading.

        Steve

        Comment

        • Rich Freeman

          #5
          Re: Yes!

          Steve

          I've heard of the drill thing but It might screw up the odometer gears. My car doesn't have the "original" mileage anyhow, best I can tell! The odometer that is in the car stopped at 58,000. But then again, how many older cars out there have the true original documented mileage?? I just sold an 81 that I bought off orig. owner with 9,000 miles, but I didn't have much documentation on it. Oh well, I'll just hook it up and if it doesn't work, then I'll take it out and send it somewhere. Thanks for the reply....Rich

          Comment

          • Gerry Proctor

            #6
            Re: Yes!

            You can get a short length of speedometer cable and plug one end into the speedo, the other into a drill. That will tell you if the speedo works and it will not hurt anything. If you can spin the drill at a constant 1,000 rpm, your speedo will read 60 mph.

            Comment

            • Rich Freeman

              #7
              Re: Yes!

              Well I tried the drill thing over the weekend on the speedometer. Results: Odometer + trip meter working OK. However, speedometer does fine up to @40 mph and then starts whining and then pegs at 160 mph and gets real noisy. I guess it is time for a rebuild. Any good vendors recommended and approx. $$$. Thanks in advance Rich

              Comment

              • Jack H.
                Extremely Frequent Poster
                • April 1, 1990
                • 9906

                #8
                Nothing

                has changed since the info I gave you as the first reply in this thread (says where to get it fixed and what 'going' rates are)....

                Comment

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