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Old 04-15-2004, 04:30 PM
Registered User
Join Date: Aug 2003
Location: New Orleans, LA
Posts: 305
help with power window problem 124

Today the driver side front power window in my '87 300E stopped working -- when I push the down buttom, the window goes down about 1/4 inch and then it stops and makes a loud, repeated ratcheting sound but won't budge. I can make it go back up to the top but it will do the same thing when I try to make it go back down. Any ideas on what this is? I will try to fix it this weekend. Thanks for any help.

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Old 04-15-2004, 05:31 PM
J.HIDALGO's Avatar
Registered User
Join Date: Jul 1999
Location: Jax, FL
Posts: 1,785
It is probably the window regulator!

The good new is the motor is working and they come separate. The only way to find out for sure is to remove the door skin.
'86 300E
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Old 04-15-2004, 08:23 PM
it leaks, its german
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
Go hunting, I think you'll find a few short teeth on the regulator.

Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.
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Old 04-15-2004, 09:53 PM
pesuazo's Avatar
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Join Date: Oct 2002
Location: Near Raleigh, NC
Posts: 580
Yep, I had the same problem.
The old regulator lost about 4-5 teeth.
A new regulator solved it.
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified
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Old 04-18-2004, 04:07 PM
Registered User
Join Date: Aug 2003
Location: New Orleans, LA
Posts: 305
you guys were right

I removed the door panel and saw the regulator was missing several teeth. I got the window to start working again by pushing down on the regulator arms, and now the window is functioning ok for the time being. I'm going to replace the regulator soon. Thanks for the tips.

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