Blower Motor Squealing Noise - Bearing Replacement?

[bmwman91]

So I also bought the expensive OEM one. It used to be made by a company other than Bosch (as far as I can tell), but new ones are made by Bosch. However, they have the right angle connector and my car...

[bmwman91]

Hard to tell from the pics, but the cam sprockets look OK at least. The real issues are usually related more to the guides and tensioner bits. The designs were updated over the years, and it is usually...

[bmwman91]

Lower RPM is not always better for fuel economy, actually. There is an optimal RPM (from an efficiency standpoint) inherent to an engine, where a couple of things are balanced against one another. The...

[bmwman91]

Ha, interesting to see URO support in here. I have to say, it is nice that URO continues to make parts for these cars since a number of items are no longer produced by OEM suppliers. I've had mixed results...

[bmwman91]

Thanks. I looked around a bit just now and found the thread. Basically, the consensus was to just go with a new $50 eBay blower motor. It looks basically identical to the $100 URO ones ECS sells (not...

[bmwman91]

I sometimes get a hefty squeal from the blower when I first switch it on, and it makes a lot of smaller intermittent noises when running. I assume that this is bad bearings? Before I go digging it out,...

[bmwman91]

lol

For shame Germany, for shame.

[bmwman91]

Pages 6413-0, 6421-0 and 6452-0 should have all the info you need.
https://www.armchair.mb.ca/~dave/BMW/e30/e30_92.pdf

For the two pairs of same colored wires (Br/Gn and Yl), it should...

[bmwman91]

Good detective work there. Maybe us M42 guys can delay the inevitable for at least a few more years!

[bmwman91]

lol

Well, I am glad you found the issue. That will certainly do it.

[bmwman91]

That stupid sprocket...it got me TWICE lol. First time the bearings blew out, which damaged the timing case and I did not notice, so about 16 months later the mounting boss it bolts to broke off entirely...

[bmwman91]

Just send them to Sssquid Tuning for cleaning & flow matching. You'll get new o-rings, filters & pintle caps. It's relatively cheap, fast and they do good service. There is really not any advantage...

[bmwman91]

I looked through some old pictures of my diff when I had it out, and the input flange is definitely offset a bit to the left (if you are looking at the flange). Your diff should be positioned fine...if...

[bmwman91]

I think that the E30 setup is way too old for the GROM adapters. As mentioned above, tapping into the CD changer connector is probably easiest. It just takes the left/right analog signals, and you (I...