There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired
A worn or frayed speedometer cable will make the speedometer shouter. As the speedometer cable becomes more frayed the speedometer will eventually quit working.
You can replace the speedometer cable, on your 1988 Ford Ranger, by loosening the cable nut on each end of the cable. The cable will come off and can then be replaced.
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.
Your speedometer may have failed, or the speedometer cable that connects to the transmission, or the plastic gear in the transmission may be broken.
Trans output speed sensor.
The wiper blades need to be cleaned.
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
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
The 1999 Ford Ranger pickup truck speedometer sensor diagram can be obtained from most Ford dealerships. The speedometer sensor diagram can also be found at most auto-parts stores.