replace the sensor which is usually in the rear diffrential or the transmission case
You have to replace the instrument cluster in most cases.
May have to take it to a certified speedometer repair shop
You might have to take the car to a certified speedometer repair shop
I'd suggest you take the car to a speedometer repair specialist. They can remove, repair and calibrate the spedometer.
You can fix the speedometer in your 1994 Oldsmobile 98 by replacing the speedometer cable. If changing the speedometer cable does not fix your speedometer you will need to replace the entire speedometer.
Speedometer cables can dry out over time. Remove the cable from the back of the speedometer, and lube the cable with graphite. This should fix the issue.
what exactly is wrong?
To fix the speedometer on a 1990 Ford Tempo, start by checking the speedometer cable for any signs of damage or disconnection. If the cable is intact, inspect the speed sensor located on the transmission for proper operation. Additionally, ensure that the instrument cluster connections are secure and free of corrosion. If these components are functioning correctly, consider replacing the speedometer itself, as it may be faulty.
Check your fuses before anything else. Easiest and cheapest fix.
Unhook both sides of battery and wait 1 minute, this will reset reset the computer to default.
The contacts between the speedometer head and the wiring connector need to be cleaned. If that does not work get a used speedometer. It fixed mine.
To fix the speedometer on a 1996 Buick Skylark, first, check the vehicle's speed sensor located on the transmission. If the sensor is malfunctioning, replace it. Additionally, inspect the wiring and connections for any damage or corrosion. If these components are in good condition, the issue may lie within the speedometer itself or the instrument cluster, which may require further diagnosis or replacement.