1985 pontiac grand am. speedometer is pegged to 100mph at all times. Any ideas?

Asked by Jul 14, 2007 at 03:33 PM about the 1985 Pontiac Grand Am

Question type: Maintenance & Repair

Speedometer is not functioning and the needle is pedded on 100mph even when the car is turned off.  What could be the possible problems?

2 Answers

44,595

Sounds like a broken or seized speedometer cable. This will require disassembling the dash to get at it. The cable is not an expensive part but the labor involved is usually fairly time-consuming.

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135

the whole instrument cluster comes out in one piece I have a 85' and it's electric no cable ...so i think maybe pull it out maybe clean the connections or look for a relay ,fuse.,Also you could just find another cluster at a salvage yard ..

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