Electric window problem

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23 Jun 2011 15:28 #5225 by EWM
Electric window problem was created by EWM
The drivers side electric window on my 1979 928 works sometimes and other times does nothing when the glass is in the closed psotion. I cleaned out the console switch contacts. The switch looks bullet proof and cleaning seemed to help it work a few times. But after a few hours, it was back to no response from the switch.

Today I found that if I push up and then push down on the window glass, the window will move up and down maybe a 32nd of an inch. Then the switch will start working to lower and clsoe the window.

Seems like it has to be something behind the door panel. Does anyone know whereto get idiot-proof instructions for removing the door panel and have any suggestions on how to repair this problem?

Thanks.

EWM

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23 Jun 2011 16:32 #5227 by srshaw3
Replied by srshaw3 on topic Electric window problem
Not sure what you will find inside related to this issue. There are door panel removal tips at nichols.nu/cat06.htm

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23 Jun 2011 17:40 #5228 by pcar928fan
Replied by pcar928fan on topic Electric window problem
I was going to guess a dirty and tired "53" Relay, but maybe not...

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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23 Jun 2011 19:17 #5229 by EWM
Replied by EWM on topic Electric window problem
Where do I find a 53 relay? In the fuse box? Have not found that yet either. Maybe it's time to pull out the owners manual...

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23 Jun 2011 19:23 #5230 by srshaw3
Replied by srshaw3 on topic Electric window problem
There are many #53 relays, presumably James knew that that is the relay used for the windows. If that is true, then you could swap them, as you will have at least a few.

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23 Jun 2011 21:30 #5231 by EWM
Replied by EWM on topic Electric window problem
Can a relay go bad allowing one window to work but not the other?

I pulled out the console side panels and confirmed that both switches operate the passenger side window but neither switch will operate the driver side window.

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23 Jun 2011 21:33 #5232 by EWM
Replied by EWM on topic Electric window problem
Great idea. I will switch two relays tomorrow night. These are the relays in the passenger well I hope?

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24 Jun 2011 03:46 #5234 by srshaw3
Replied by srshaw3 on topic Electric window problem
What year is your 928? I just looked at the fuse/relay layouts on the 928gt.com and do not find a separate relay for each side for 77-79, but perhaps it changed in later years.

If you want to review these charts:

928gt.com > 928 Fuse/Relay Charts (on left hand side)

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24 Jun 2011 14:24 #5239 by N2O-928
Replied by N2O-928 on topic Electric window problem
The relays are under the carpet in the passenger foot well, lift the Wood access panel from the bottom, sometimes you need to loosen the two Philips head screws in the lower wood piece.
This is called the CE (Central Electric) panel on the 928 all (or most) fuses and relays are located here, make sure you get the correct fuse/relay map for you model year.

Most important!!! Disconnect the battery before removing or replacing anything, as it is good safety practice when dealing with old electric connections and also it sounds like you are not too familiar w/ the 928.

This sounds like a motor issue or a cleaning and lube issue if you swapped switches and I think there is only one relay for both windows (on an 85/86 there is only one called the window winder).

Dave

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24 Jun 2011 22:16 #5248 by pcar928fan
Replied by pcar928fan on topic Electric window problem
Stan, I am glad you called me out on that... I had a couple of relays to replace and ONE was a "53" but it was for the fuel pump...the window lift is a completely different relay and much bigger!

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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25 Jun 2011 23:40 #5252 by EWM
Replied by EWM on topic Electric window problem
The solution I hope was to solder a half inch piece of wire to bypass a dime sized black plastic component inside the motor. I think it was a high temperature cut off switch. It had the number 9003 stamped on the side.

One side had the component, the other did not. The motor is re-installed and working now.

Have tried to insert an image but no luck.

Attached files [img]media/attachments/5392=612-window motor.jpg[/img]

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