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Old 07-26-2005, 01:04 PM
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Join Date: Jul 2005
Posts: 9
92 400E Blower Motor Problems???

My blower motor stopped working so I pulled off all the stuff they stack on top of it. When I got it out it didn't work, so I dug further and found the regulator. Checking the voltage to it, there was. While all was out of the car, I connected the controller to the blower motor and turned on the ignition, set the temp wheel far from what the outside temp was and put the fan on auto. The Blower motor ran at slow speed. Set the switch on manual and the blower went to hight speed. All seemed well. Put the regulator back and clipped the motor in its cradle above it and again went to the switches. Now it didn't work.

Is there anything that would make the regulator work while out of the car but not when installed correctly. I say that because both screws were in and the two wires for the blower went under the clamp wire just as they came off.

Thanks for any and all help.

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Old 07-26-2005, 02:42 PM
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Join Date: Jul 2003
Location: Tulsa
Posts: 304
Try giving the blower motor a spin with your hand while it is clipped in to the mount. I'm betting the motor will start to spin or work after you give it a little help to start.

When mine was out, I used a few drops of tranmission fluid on the bushings on the shaft on both sides of motor, just under the blower fins.

Check to make sure the motor brushes aren't worn or have "gunk" caked on.
Russell McMahon
Tulsa, OK

2001 CLK 320
1992 400se
1993 400e
2000 320ML
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Old 07-31-2005, 09:13 PM
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Join Date: Jul 2005
Posts: 9
Thanks Russell, I will try that.


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