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Re: Heater Fan Question (archive)

[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]

Posted by Gilbert on January 02, 2001 at 21:42:25:

In Reply to: Re: Heater Fan Question posted by Roy on January 02, 2001 at 17:41:03:

I believe the fan bearings are sealed, but a little WD40 may help, and perhaps debris is causing the squeak. Usually its the fan rubbing the housing, as the bearings are gone and it allows the fan to move about. It will squeak louder in a turn? Or not on high but at slow speeds? I have heard of guys drilling a small hole in order to access the bearings and oil them. I never tried that, but have replaced two motors on an E23. The first time I took it apart but there wasn't much to do, and I wound up replacing it within another month or so. The second time the new one (by then maybe five years old) started squeaking I just replaced it. Its pretty straightforward, just as Roy says, but I'd buy a Bentley manual. You'll want one anyway.
Good luck.
Lin Gilbert
1990 750iL

Is there some way to get some oil to the heater fan motor without tearing the entire dash apart? My fan is begining to squeak and it's kind of annoying. Only seems to do it cold, though.

You access the heater blower motor from the engine compartment. the Haynes manual gives you the basic instructions. there is a panle behinf the wiring harness that you need to remove after cutting the plastic fasteners that hold the wiring harness. then just keep going till you get to the blower motor. It take about 15 minutes after you have done it the first time. while you are in there you might want to vacume out the top of the heater core at the bottom of the opening.

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