Hello
I am helping out a friend with this 87 930. Really nice low mile car. It has one of those overly complex alarm systems in it that controlled the power windows, sunroof, you name it, millions of aftermarket relays and miles of speaker wire.
As with most of those alarm systems it met its demise by the alarm relay control box catching fire. After that power windows, sunroof inoperable and the door buzzer never goes off.
I have being pulling all the alarm parts out and repairing the harness. Now I have power and things are starting to work. passenger side window works like a champ. I can hear the driver side motor faintly try but goes nowhere.
I ran direct power to the motor, no luck. So I figure maybe the motor got fried in the Alarm fiasco. I loosen the window regulator. I am having a hell of a time getting the regulator into a position where I can pull the motor off since the regulator is stuck in the window up position.
After struggling for 10 min I hear a clunk as something drops into the door channel. Hmm I fish it out
Looks pretty beat up whatever it is. I wonder....
I apply power to window motor and wallah! it works. So this thingie was jammed in the regulator.
Question is what is it? Is it part of the regulator?
thanks Daron