It sounds to me like a loose connection to one or both window switches. Before you buy an expensive part, pull your switches, clean and check connections. If that does not fix problem, get the circuit diagrams and trace out power and connectivity. Throwing parts at a problem is good for the parts guys, but if it's not the right part, you will still have the original problem.
Good luck,
Dave

I need some help. My passenger door will not close without slamming the door an few times. However it closes perfectly the first time if the drivers door is open or the passenger window is open.

I want to install a time delay relay using the door light switch as a trigger. When the door is open the trigger will lower the window for a few seconds (x) and when closing the door the window will close the window for x seconds.

Which wire/s on the switch controls the up and down function movement ?

Hi Reuben. red/black and red/white. You'll need your mulitmeter to figure out which is the up and which is the down. The black and the green go to the winder motor and brown is ground (earth). Sounds like a good idea, Bill.

Thanks, will post results when done

I had similar problem...fought it forever. Finally determined the wire going through the door to the switch had a kink in it and would randomly make/lose connection. Drove me nuts thinking I'd fixed it.

I have a passenger window problem that differs from the OP's. In my '87 Carrera, both driver door switches work, but the passenger door switch does not. I have tried swapping the switches, but the problem persists. Any ideas? TIA.

Passenger side?

Well, some time ago mine quit working because...

http://forums.pelicanparts.com/uploa...1575057390.jpg

I'm sure that I don't have the same problem. I can lower and raise the passenger window with the switch on the driver's door, but the switch on the passenger door will not raise or lower the window. Swapping the working driver door switch to the passenger door did not fix the problem.

Fixed my pass side today. Window would not raise. Hit the door panel by the switch and it started going up and back down then quit again. Removed the door panel, window switch, checked the wiring, cleaned all contacts, sprayed contact cleaner into the window switch. Works like a charm now.

FLOJO!

How many times was that motor drove into the hard stop up or down side to create the cracks on that motor!? Wow. When I started fussing with my motors in the doors I was expecting to see such a mess, but those motors are quite over-engineered with AlCuZn (or some zinc alloy) for the gear box: you may want to send that to the PE at Porsche to see how he reacts.

Hi everyone, new here and new to Porsche. I have a 1980 911 SC. My windows on the driver side works but the passenger side doesn’t. I already tested the motor and fixed the regulator but still not working. Thanks.

Howdy, I have an 85 911 coupe. I am experiencing a weird problem (at least to me) with my power windows.

This is the issue. I replaced the passenger side window switch, followed the pics in this topic and in Bentleys manual. When I rewired the switch down was up and up was down.

Also, the drivers side window switch works as it should, the drivers side passenger switch does not work at all now.

I replaced the Drivers side pass switch with a new URO switch. Still does not work.

So I went back to the passengers side switch and verified that the wires are in the proper locations and they are.

interesting note, in the Bentleys manual the 1984 911 wiring for the drivers Side pass switch wire colors match those in my car. For the passengers side switch, the 1986 wiring colors match.

Both the drivers window switch and the passengers switch move the window up and down. The drivers side pass switch does not work.

So, I am bit at ends here.

Any suggestions?

Chasman

Clean the female side of the terminals, triple check the wire placement. Use a multimeter, are you actuating a pulse? Is your ground bad? . Fox and hound or short test the wires. That’s all I have

Switch
 

If up is down, and down is up, your switch is upside down.
Or, the two directional wires are transposed.

Gerry