Speedometer - Impala Tech
Troubleshooting Diagnosing problems

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post #1 of 3 (permalink) Old 05-15-2018, 01:22 AM Thread Starter
Join Date: Apr 2016
Posts: 25

Hello. My impala 1965 speedometer needle star jumping up and down, and mile calculator stop running. When i reverse about 20 meter everything works fine some time. What is the problem?
Vesku is offline  
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post #2 of 3 (permalink) Old 05-15-2018, 08:02 AM
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Join Date: Jan 2018
Location: Coopersville, MI
Posts: 389
Has your speedometer cable came out on either end or is it being restricted by a sharp bend?

Check speedo gear in transmission and make sure it doesn't look worn.
Deadwolf is offline  
post #3 of 3 (permalink) Old 05-15-2018, 10:43 AM
Join Date: Jan 2006
Posts: 12,932
Sounds to me you might get away with lubricating the speedometer cable with some dry graphite. If the cable is staring to unravel it is time to replace it. Cars had plastic speedo gears, while the same ratios were made out of aluminum in trucks if you have to replace the gear due to wear.

Big Dave
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