Failure associated with 1989-97 Thunderbird Odometer Gear takes place as a result of extortionate temperature and age. You can observe the destruction due to the warmth. The synthetic gears got therefore hot the outer lining programs bubbles which weakened the gears and in the end caused the apparatus or gears to split in addition to odometer to cease working.
The odometer area of the speedometer has a small motor that is electric drives a 16 enamel cam gear also referred to as provider gear which in turn drives a 20 tooth intermediate gear which drives the odometer and trip odometer.
16 enamel Carrier Gear
20 enamel Intermediate Gear
Now through replacing these gears that you know what the cause of the odometer failure is lets take you.