Need to figure out what's wrong with them, first.
The best way is to buy a book on your model and see if you can do it. Then! Ask again on this sight for help when you feel confident that you know what your doing to repair the speedometer.
To repair the speedometer and odometer in a 1991 Volvo 940, first, check the vehicle's speed sensor, which may need cleaning or replacement if faulty. If the speedometer gauge itself is malfunctioning, you may need to remove the instrument cluster and inspect the connections and solder joints for damage. For odometer issues, often the gears inside the odometer mechanism are worn and may require replacement. If you're not comfortable with these repairs, consider consulting a professional mechanic.
Unless you can find a rebuilder on the web then you can have the dealership send it off for repair. You could also look for one at a junk yard.
Unless you can find a rebuilder on the web then you can have the dealership send it off for repair. You could also look for one at a junk yard.
The odometer on a 1991 Chevy Z24 Cavalier may stop working due to a few common issues, such as a malfunctioning speedometer cable, a faulty speed sensor, or issues with the instrument cluster itself. A broken or worn gear within the odometer mechanism can also cause it to fail. Additionally, electrical problems, such as a blown fuse or poor connections, could affect its operation. Diagnosing the specific cause typically involves inspecting these components.
If the odometer on your 1991 Miata is not working, it could be due to a faulty speedometer cable, a malfunctioning speedometer head, or an issue with the vehicle's electronic components if it's equipped with one. Additionally, worn gears inside the speedometer can also prevent accurate readings. Inspecting the cable for breaks or ensuring proper connections can help diagnose the problem. If these components are in good condition, it may be necessary to replace the speedometer unit itself.
Broken cable?
from a breaker's yard, authorized dealer or possibly even Ebay.
It is an electric speedo so it can be the speed sensor or in the speedo itself.
The issue with the odometer not working while the speedometer functions correctly in your 1991 Dodge truck is likely due to a problem with the odometer's internal gears or the odometer drive assembly. These components can wear out or become damaged over time, affecting the odometer's ability to record mileage. Additionally, a malfunctioning speed sensor or wiring issue may also contribute to this problem, though it's less common when the speedometer is still operational. Checking the odometer gears and connections may help identify the exact cause.
To fix the speedometer and odometer on a 1991 Plymouth Acclaim, first check the vehicle's speed sensor, as a faulty sensor can cause both instruments to stop working. Inspect the wiring and connections for any damage or disconnections. If the speed sensor is functioning properly, the issue may lie within the instrument cluster, requiring repair or replacement. Additionally, ensure the vehicle's fuses are intact, as a blown fuse could also affect these components.
its a fuse