Trans output speed sensor.
Your speedometer may have failed, or the speedometer cable that connects to the transmission, or the plastic gear in the transmission may be broken.
A worn or frayed speedometer cable will make the speedometer shouter. As the speedometer cable becomes more frayed the speedometer will eventually quit working.
synchonizer worn in transmission
I believe the fuse that protects the speedometer also protects all the gauges in the dash cluster, so if that fuse was burned out all the gauges would be dead. If only the speedometer is not working I would suspect the speed sensor in the transmission to at fault, if the wiring checks okay.
speed regulator sensor needs replacement
If the ABS light is flashing it means the system is malfunctioning but still working. The dash light behind the speedometer is burnt out.
Yes , I BELIEVE the last year for a speedometer cable on a Ford Explorer was the 1995 model year so the 1991 Ford Ranger would definitely have a speedometer cable
The wiper blades need to be cleaned.
one or more fuses blown
On a 1995 Ford Ranger : The ODOMETER is near the center of your speedometer
1996 ranger does not have speedo cable it is electronic
Tranny is shot Have it rebuilt or a new one i found rust in mine.