Possibly needs a new switch, that is what I have been told by my mechanic about my Ford Tempo locks.
how do you replace front door actuator for 93 ford tempo
power door lock actuator is broken and not letting the key raise the lock button
First take the door panel off and inspect the wires, the window track, and motor. My tempo has a stuck window as well. My window track is really rusty, and I think could be the issue.
Look under the dash between the steering wheel and the door.
Check switch Check to see if you are getting power to motor Maybe an open wire in the door jamb area Try slamming door while holding switch with vehicle running
Listed on the driver's door post. 175/80-13 or 185/70-14
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Possibly low coolant level, or temperature control door either set to cold or not working correctly.
If they have not changed from the '89, then take off the glove box door. Its there. Just remove all the small screws then pull it out.
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If it came equipped with power locks, it's possible the lock actuators seized up and it's impossible to lock/unlock them depending on which they were before they seized. My drivers rear door lock actuator seized up in my '92 Tempo GL and it was impossible to unlock, I had to remove the door panel with the door closed and just cut off the actuator stem (the part that actually makes the door lock/unlock) and then it's possible to lock/unlock the door.