PeachParts Mercedes-Benz Forum

PeachParts Mercedes-Benz Forum (
-   Tech Help (
-   -   No high blower motor on 89 300E (

jwiggin 05-04-2002 10:52 AM

No high blower motor on 89 300E
I've been thinking about pulling the blower motor to inspect the bearings, etc. and lube, but am wondering whether the problem could be the controls. Soon after I bought the car it was making a hollow, knocking sound when the fan should be on high (high fan switch in, max hot or max cold), which would stop after awhile, but never any high fan. Low fan works fine. After a week and a thousand miles, the knocking sound no longer occurs. I have pulled the glove box and am now thinking that the sound might have been coming from the vicinity of the vacuum junction box. Could this be a control problem? Is there someway to force the blower motor into high?

Thanks for any help.

Paul 05-04-2002 07:47 PM

more than likely you have a bad fan speed regulator that is located underneath the fan motor under the wiper motor

All times are GMT -4. The time now is 02:35 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website