Top rear of the engine next to the distributor.
If your odometer/speedometer stopped working, then you must replace the "vehicle speed sensor" located on top of the differential if your have a manual transmission.
Temp. sensor my have stopped working. Quick and fairly easy fix.
It is possible that the temperature gauge has stopped working in a 1992 Tempo due to a blown fuse. It is also possible that the temperature gauge stopped working do to the temperature sensor in the engine having a short.
CHECK THE SPEED SENSOR TO MAKE SURE IT IS HOOKED UP AND DO AN OHMS TEST ON IT TO MAKE SURE IT ISNT BAD
check the blower fuse, temperature sensor on the radiator,switch on the dashboard and the blower relay switch.
Check the speed sensor.
Vehicle speed sensor approx £40 fitted.
Try replacing temperature sensor
speed regulator sensor needs replacement
check the fuse, the speedometer does not run off of a fuse
If both the speedometer and odometer stopped working it is probably the speed sensor in the transmission gone bad. If only the speedometer quit you may have to replace the dash cluster with a reconditioned unit.
there is a speed sensor on the side of the trans, where the cable used to be. unplug the wires and replace the speed sensor. pretty simple to do.