Ok, so this sucks. I have long had a problem with the power locks where they make the drivers door stuck in the locked position. When it happens, I climb in through the passengers door, pull on the handle and shove the door with my shoulder till it opens. The problem today, it that the interior door handle came off in my hand-It's broken.
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Suspect actuator is defective. Test by; disconnect actuator conhector; using jumper wires connected to battery positive (+) and negative (-) or use a portable tool 12vdc batty; attach jumpers to actuator connector; reverse polarity for opposite direction.
If it doesn't move in unlock replace it. It may be weak so try and determine if it pulls or pushes with equal force.
Using a Digital Multimeter, the actuator current draw (stall test) should not exceed 6.2 amps. Reverse the power and ground leads to the connector and repeat test.
Besides meisk5's suggestions. Spray some lock lubricant into your door locks. I have to do that on my 88 because the dust cover on the key slot is broken. Dust gets into the works and things get stiff to where the key won't unlock the door...
Had a similar problem, the actuators have rubber boots over them to protect them from the elements, and over time they rip apart. Then they let water and grime in. That usually kills them. When you reinstall them, make sure you clean all the lock mechanisms and lubricate them. In the mean time, can you crawl out the back window??
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1990 Bronco Eddie Bauer 5.0L, AOD
1959 Ford Ranch Wagon with a 460/C6
Lowered 3 inches, Mexican blanket interior, and just the right amount of patina.
They sell the door handles at parts stores, I would probably just buy a new one, it's not worth the time/hassle to get a 30 year old plastic piece when you can buy a new one at the parts stores
If the lock actuator is what is getting stuck, you can just disconnect it until you can get a new one. Then you would just have manual locks though until you replaced it. But as suggested, the key mechanism might be stuck too. Have you tried opening it with the key when it gets stuck?