1986 Grand Am problem with speedometer

Tiny
DAVIDPISCHEL
  • 1986 PONTIAC GRAND AM

1986 grand am, 86,000, 2.5 FI, I have changed the instrument cluster and the speed spensor, my speedometer still jumps and only works periodically but usually works after about 3 miles, or when car is warmed up. Can you tell me what the next step would be to check. Could it be electrical? If it is what wire do I trace? Any suggustions would be greatly appreciated. Thank you.

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Saturday, September 8th, 2007 AT 10:24 AM

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