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Tiny · Joined: 10 Apr 2006 Posts: 502 Location: London, UK

the driver's electric window seems to have an intermittent fault whereby i activate the switch and i notice the voltmeter needle on the centre console drops down but no window movement.

this happens when the switch is activated in both directions, but the window and motor do nothing.

i've takent the motor out and it works no problem!

passenger window works fine no probs

what could it be?

thanks
tiny
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*****1981 - 924 - Auto - London, UK******

Paul · Posted: Mon May 08, 2006 1:50 am Post subject:

I'm guessing the motor is almost done or the driver's side switch needs cleaning (less likely).

Could also be the ground for the window motor is dirty.

It's probably not the relay since the passenger window would have the same issue.
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

D Hook · Joined: 02 Nov 2002 Posts: 3158 Location: Omaha, NE

With the motor out, does the window slide freely in the track to it's fullest extents? Might be some schmutz in the track or the improper alignment.

EDIT: Sorry, schmutz is a technical term for debris.
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'80 924 n/a SOLD

Tiny · Joined: 10 Apr 2006 Posts: 502 Location: London, UK

would you know where the ground for the drivers window motor is ?
thanks
tiny
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*****1981 - 924 - Auto - London, UK******

dpw928 · Joined: 02 Nov 2002 Posts: 1860 Location: owasso, ok 74055

Had a similar problem with my 928. The culprit turned out to be the grease in the gearcase had turned to rocks and causing the motor to bind up.

Dennis
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81 931 5 sp
78 928 5 sp Silver
78 928 AT Euro Black

Tiny · Joined: 10 Apr 2006 Posts: 502 Location: London, UK

i took off the motor, checked manually to see if the window goes up and down OK, and it does...

refitted the motor, and it worked fine again.

my guess is the motor cant engage the mechanism correctly for some reason when the window is in the fully up position.

but it works now, so we'll see if it happens again.

also noticed the bottom of my door full up with rain water.
doesn't it have drainage for rainwater?
tiny
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*****1981 - 924 - Auto - London, UK******

D Hook · Joined: 02 Nov 2002 Posts: 3158 Location: Omaha, NE

Yes, they do have drain holes.
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'80 924 n/a SOLD

Tiny · Joined: 10 Apr 2006 Posts: 502 Location: London, UK

thank you for replying d hook.

i was rushing yesterday, between the downpours so when i get some more time on a better day, i will clean out the path for the water.

cheers
tiny
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*****1981 - 924 - Auto - London, UK******