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Bouncing Speedo??

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Old Oct 13, 2007 | 03:01 PM
  #1  
66L72's Avatar
66L72
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From: Keswick Ontario
Default Bouncing Speedo??

I posted on the C3 section but didnt get much feedback.
i think the C2 is similar so here goes

a friend has a 78 with a speedo needle that bounces all over. he has changed the gear at the transmission, installed and lubricated a new speedo cable but still has the problem. He asked me to get him a new speedo head unit but i cant find such a thing on the Paragon or CC websites.
Any ideas what the issue might be and how to service it or where to get a new speedo head??

thanks
bob
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Old Oct 13, 2007 | 05:38 PM
  #2  
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From: Henderson MI
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Something you might try is cleaning out the speedo cable housing.
When my 66 spedo was bouncing I did pretty much what you said was done.
I wondered if perhaps there was old grease/lube build up in the housing so I disconnected both ends of the cable/housing then pulled out the cable and ran a wire back in place of the cable (from the speedo end) and attached a small piece of "rag" to the end of the wire as it exited at the trans end.
I was suprised at the junk that came from the housing.
I did it 3 or 4 times then put the cable back in the housing.

Although it did not completly eliminate the bounce, in my case it probably decreased it by about 90% ( now it bounces below 10 mph) and I can live with that.
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Old Oct 13, 2007 | 08:36 PM
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ttt
he installed a new cable and cable housing so i cant imagine that being the problem.

any other ideas out there?
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Old Oct 13, 2007 | 11:35 PM
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He shouldn't need a new speedo head unit. He should be able to find a speedo repair shop in the area that can check it out and fix it once he pulls it out of the dash.
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