Weird, mine has started quitting when the A/C is on and the fan is switched to like the #2 setting. Moving it to the #3 setting it works fine. It doesn't seem to do that with the A/C off so I'm assuming it's somehow related to that, maybe a leak somewhere in the A/C/Heater plumbing somewhere?Originally Posted by Jehu
I had a Volvo 240 DL that was noisy the way you describe and it never did fail all the years we owned it, dk about bimmers though.
2 Grand Master
Blower Rattles? Prognosis?
Once the Blower (I assume this is what I hear) begins to rattle can this still work indefinitely or do they always fail completely shortly after? Started hearing this a few weeks ago and now its pretty much a full time, all speed rattle... I also tonight believe i noticed the speed was flutucating rather wildly speeding up then slowing...
Last edited by Jehu; 05-18-2008 at 12:16 AM.
1995 540i Manual build 1/95
4 Grand Master
They will go for a long time making noise. If you can stand it.
"The gas pedal wouldn't go to the floor if it weren't meant to be there"
2 Grand Master
Any idea what's causing the rattle exactly? The impellers just wearing on their axle? Replacing with another used part may not be all that smart if they all end up doing this eventually.
1995 540i Manual build 1/95
With the experience with my Volvo, I think you'll get sick of hearing it and go ahead and fix it long before it completely fails.
2 Grand Master
Probably true. I am just such a huge wimp when it comes to being uncomfortable driving in the heat that its at least some relief to have some basis to trust i will probably not be forced to go without it due to sudden failure before I get a new one and install it.
1995 540i Manual build 1/95
4 Grand Master
The motor shaft rides in bronze bushings that wear. If the slop becomes bad enough they screech like hell and even sometimes the blower cages rub the housing. I've seen them with .030" play and still turning.
It will "function" almost indefinately but the noise will eventually get the best of you.
I have a '93 e34 and my blower started rattling also after a long few winters of storage. I blew the fuse now. I suspect that mice have got in and built a few condos. They always seem to get in this area for some reason. I am going to open it all up today and clean it out. My speed settings work sometimes and then cut out and last time I only had full speed--so for sure I also have to replace the motor resistor blue block--a common failure item. Will know more in a day or so.
Grand Master
Silicone spray usually clears the 'SCREEEEEEE...' noise if the bearings go noisy, however it's only a temp fix and a hell of a lot of work to strip it for a months worth of noise free operation!
Big, Big Time Poster
Ross you say : It will "function" almost indefinately... Upon your experience what about the life of the brush that feed the blower motor ? what's the chance that they fail / worn out before the bushing ?
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