odometer not working

FORD
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ACOOP98BLACKCAT
  • MEMBER
  • 3 POSTS
About a year and a half ago my odometer and my trip odometer quit working. I went to a salvage yard and got another one but it quit working too. Could this have anything to do with the fact that I put aftermarket rims on my 94 cougar and they are considerably heavier than the stock wheels.
Jan 29, 2006 at 11:58 PM
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GODBEAR839
  • ✓Experienced Mechanic
  • 77 POSTS
weight should have no bearing on the odometer at all. Size difference would but weight should not make anything happen odometer wise at all. Might need to change the gear that reads it in the transmission though.
Jan 30, 2006 at 12:18 AM
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Suggested Repair

Heavier aftermarket wheels are not the cause. A wheel size difference can affect odometer readings, and the transmission gear that drives the odometer may need to be replaced.

Conversation Summary

The owner of a 1994 Cougar reported that the odometer and trip odometer stopped working about a year and a half ago, and a salvage-yard replacement also failed. The owner asked whether heavier aftermarket rims could be responsible. The expert said weight has no effect, though a size difference could, and suggested replacing the gear in the transmission that reads vehicle speed for the odometer.

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