I have a 91 240 and the power locks just stopped working. Now everytime I go out to the car, the battery is dead. I actually have to pull the fuse for the power locks when i'm not driving it and the battery won't die. If I don't pull the fuse, the battery dies. Any ideas?

 

It's a common problem for the wires in the door to go bad and short against the metal frame. Then the lock becomes constantly energized and drains the battery.

 

So I need to take the door apart?

 

Yes. Do the power locks work using the key vs. the lock/unlock lever inside the car?

This might help to isolate:
http://www.brickboard.com/RWD/volvo/..._1991_200.html

 

When I ise the key, it only unlocks / locks the drivers side door.