Quote:
Originally Posted by Hatterasguy
You probably had a vacuum leak, this could have burned the pump out. The pump should only run when you lock the doors, it should not run at any other time on a W126.
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This is purely an elementary issue I'm suggesting here, so bear with me.
When I pirated my pump for the motor to be used in a keyless setup, It had a circuit board and what looked to me to be some sort of electro/vacuum relay. I assume the circuit board handled motor run times & direction and the relay was a shutoff to prevent motor burnout in case of vacuum leaks.
Of course, my board was burned out, so I was not able to test any of that.
My decidedly off-topic guess was that something went wrong in his control circuit which allowed the motor to run on due to the leak and
that's what caused it to burn out.
I had a '95 Jetta for a while which had a leaking passenger door actuator. The pump would run for about ten seconds and the door would hiss before it shut itself off.
Not that that makes any difference in his situation or helps him in any way at all. Just trying to show how gosh-durned smart I am.
