It would probably be cheaper to replace the cable, check with your local auto wrecker. This used part should be very inexpensive, compared to repairing it.
If your speedometer is cable driven and not electronic, it sounds like the cable needs to be lubricated. You remove the cable from the back of the speedometer and pull out the inner cable and slide it back in while lubericating it with some speedo grease.
No, the speedometer is driven electrically from the PCM.
There are several things you can do to repair your speedometer. You can replace the speedometer cable. You can replace the speed sensor in the transmission.
There is no Cable it is a speed sensor on the transmission
Loose or failing speedometer cable Speedometer head needs repair
Most likely speedometer cable
To repair the speedometer cable on a 1992 Ford Tempo, first, disconnect the negative battery terminal for safety. Locate the speedometer cable at the back of the speedometer and the transmission; detach it from both ends by unscrewing the retaining nuts. Inspect the cable for any breaks or fraying; if damaged, replace it with a new cable. Finally, reattach the cable, ensuring it is securely fastened, and reconnect the battery.
The 2000 Mercury Sable starter will have three retaining bolts. There will be two cable retaining nuts on the front of the starter.
To repair a speedometer cable on a Toyota pickup truck, first, locate the cable, which typically runs from the transmission to the speedometer gauge. Disconnect the cable from both the transmission and the speedometer head. Inspect the cable for any visible damage; if it's frayed or broken, replace it with a new one. Reconnect the new cable securely at both ends, ensuring it is properly routed to avoid any interference with other components.
If the speedometer is not working it probably needs a new speedometer cable. If the speedometer is actually broken either take it to as speedometer repair shop or replace it.
A 1995 Jeep Grand Cherokee does "NOT" have a speedometer cable. It has an electronic speedometer with a built in motherboard. It receives its signsls from sensors on the transmission and the transfer case.
Actually , it doesn't have a conventional speedometer cable , it has an electronic speedometer and a vehicle speed sensor ( VSS ) according to my Haynes repair manual