[Tcoat]

Originally Posted by Kayysonie

@Tcoat @Ultramaroon

I have to revive this thread as I finally did fix it and did investigation.

The main culprit is the motor. Grease built up on the commutators that prevents full contact to drive the motor. The worm gear or connections are totally fine.

I completely replaced the whole door lock assembly (40 bucks used on EBay). Replacing it was really easy. I just didnt want to do the work of removing the panels, window, and part of the regulator assembly. But I was bored and the car was sitting in the shop.

I tried mending the old one but it was impossible to open the door lock housing with out breaking tabs and ruining part of the mechanism inside. I knew I wasn't going to get it back together so I just tore it apart.

With my background with motors, I opened it and immediately found the issue. Cleaned the commutator and the motor works fine now but I cannot put it back together.

There you have it. If anyone wants to do this, it's easy. 2 years of procrastination didn't help.

So that was probably why it was sporadic at first. If it stopped in the wrong place it wouldn't work. If it stopped where clear it would. Eventually the whole thing just got so gunked up it didn't matter where it stopped. Makes sense. Thanks.