Intermittent sticking door lock
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Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
Intermittent sticking door lock
1984 F150
The key can be inserted to unlock the door and 90% of the time, it works, but 10% of the time, the key will rotate approximately 75% of the way and the chrome lock stem inside the truck [don't know the technical name] can be seen trying to pop up, but does not.
I removed the door panel and generously lubricated every moving part I could see and get to. That did not seem to help, so I next purchased genuine Motorcraft lock tumblers and replaced then. Still doing the same. When the driver's door does this, I can go through the passenger door and using the inside door handle, easily open the door.
Help!
The key can be inserted to unlock the door and 90% of the time, it works, but 10% of the time, the key will rotate approximately 75% of the way and the chrome lock stem inside the truck [don't know the technical name] can be seen trying to pop up, but does not.
I removed the door panel and generously lubricated every moving part I could see and get to. That did not seem to help, so I next purchased genuine Motorcraft lock tumblers and replaced then. Still doing the same. When the driver's door does this, I can go through the passenger door and using the inside door handle, easily open the door.
Help!
Posting Guru
Joined: Sep 2003
Posts: 1,002
Likes: 1
From: Right Next to U
Possible solution is to replace the linkage and also check to see if the latch assy. is moving freely....somebody jerked hard on the linkage while trying to open will cause it to bend an bind when trying to use the key to open the lock.
Posting Guru
Joined: Aug 2009
Posts: 2,271
Likes: 2
From: Mexia, TX
I had a problem like this a long time ago...if I had my driver side window rolled down past a certain point, sometimes the door wouldn't unlock even if you opened it from the inside. I think some of the linkage was bent and got bound up.
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