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Old 07-02-2002, 11:49 PM
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Join Date: May 1999
Location: Sacramento, CA
Posts: 1,472
1991 300E anemic fan blower

1991 300E with about 175,000 miles. The fan blower in all climate mode settings puts out a very low volume of air. If the HI fan is selected, it puts out marginally more air than AUTO or LO, but still terrible (and no good for cooling off a car after a day in the 100 degree sun). I checked the voltages coming off the three pin connector on the firewall (by the brake booster), and they read zero (!)... yet the fan still barely works. Any ideas on this one?

On a related note, does anyone know how to remove the buttons off of the front of the CCU? I thought about checking/re-soldering the solder joints for the CCU buttons to see if that would help, but the front panel doesn't come off without removing the pushbuttons.

thanks in advance,
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Old 07-03-2002, 06:00 AM
renok7's Avatar
Registered User
Join Date: Nov 2001
Location: Montréal
Posts: 95
Your blower motor regulator may have gone south.

'93 300E 4Matic
'98 Nissan Altima
'00 Yamaha Road Star Silverado
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Old 07-03-2002, 06:24 AM
Join Date: Nov 2001
Location: Cape Cod Massachusetts
Posts: 1,427
Lightbulb Brushes?

Could be the blower motor brushes!

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Old 09-15-2002, 06:58 PM
Registered User
Join Date: May 1999
Location: Sacramento, CA
Posts: 1,472
Thanks! Turns out it was the blower fan regulator, and when they took the blower motor out, found out it the brushes were almost done with (but still working) too. So we replaced both!

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