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Old Dec 29, 2006 | 12:49 AM
  #1  
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dennis1492
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From: Bradenton Fl.
Default Speedo question

Hi it's me again. (haha)
I asked the question on a speedo problem but I cant find it so here it goes again. My speedo bounces back and forth when I am doing 30/40 it says 60/70 son is a Detective so had one of his radar buddies clock me and it is way off/ Could it be the circut board? or what else should I be looking for,any help on this would be great and thanks in advance.

Dennis Stahley
1978 L82 Auto.
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Old Dec 29, 2006 | 06:05 AM
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wxw116
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From: Renton WA
Default howdy

I had a similiar problem Dennis, I would check the driven gear in the speedo line, make sure it's not worn/applecored.

Take note of the color and count the teeth to replace it, if thats what the problem is.

Good luck.
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Old Dec 29, 2006 | 12:10 PM
  #3  
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dennis1492
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Thank's I will check this out. I appreciate the help

Dennis
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Old Dec 29, 2006 | 12:13 PM
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moosie982
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Did you try lubing the cable, they usta use graphite, but now I dont know what is used. Good luck,,,Peace,,,Moosie
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Old Dec 29, 2006 | 02:08 PM
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C3 4ME
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From: Glen Allen, VA
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It wouldn't have anything to do with the circuit board. The speedometer is mechanically driven by the speedo cable, no electronics are involved. You might try disconnecting the cable at the transmissioin, then chuck the cable up in a drill in the reverse direction if I remember right, run the drill and see if it still bounces. If it does, you've eliminated anything in the transmission as a possible cause.
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