Alternator Replacement: E90 330i 2006 BMW

Alternator Replacement

My wife and I went to eat not too long ago, and little did I know I was not going to make it back soon.

You see my car gave me a battery warning on the way there.  I knew my battery was low, I have an app that can monitor that, but because I don't drive my car as often as I use to, it often took a bit of freeway driving to "recondition" the battery, and so I kept going.  On my way back my E90 200 330i didn't want to go any more, I ended up getting towed back home.

Next day I got a replacement Alternator from my local Autozone, they had a lot to select from, the most important part was making sure that it was 180A alternator from Valeo, which they did.

My Alternator was $150.00

So I set out to replace it, and to my surprise it was the most simple service I have done to my car.  I only had to remove the Air intake box and I had access to all.

I pulled the belt off it and I un did the 4 screws holding it, I loosen the 1 connector and 1 (hot) red wire, then out it came.  I put the new one in and put everything back and that was it.

Very simple to remove and replace.

Make sure to disconnect the Negative from the battery before you start working on the car

After you remove the intake air box, you have good access to the 4 screws to remove the Alternator

Replacement didn't come with Pulley, make sure you save it from the original

Pulley removed

Old alternator with pulley

I think it failed because it had all this "oil" with dirt and it didn't vent right, eventually it overheated I think

Connection cable unplugged

To charge the battery back up I left it charging overnight

I hope this was helpful to you!

Link to Blog Main Page:  See them all

Burned Blower Motor Regulator Connector, but still working.

Burned Blower Motor Regulator Connector, but still working


So I kept hearing this strange noise coming from the Blower Motor, and it seemed to stop when I turned the air off in my car, and I have heard stories of the Blower Motor being the cause of this noise, so I decided to go in there to see what the problem was.

I removed the Blower, not that difficult, unfortunately a lot of screws, about 10, then removed the glove box, and the bottom panel, then, just rotate the "Blower" to the right, after you undo the plastic "lock".

Plastic lock

Pull down on the plastic lock, I used a screwdriver, and then rotate blower to the right.  Then the motor comes out, unplug the cables from the fan before you rotate blower motor.

This is what I found:

Fan Blower Regulator

Bad Fan, Good Regulator? The fan motor was very hard to rotate and I could tell it was ready to go bad, I will replace it soon.  Unfortunately not only will I have to replace the Blower Fan, I will also have to replace the Blower Regulator too, as you can see it's has been overheating.  It's just a mater of time before it goes bad.  The regulator alone is like $90 dollars.  Here is a link to Amazon if you are interested:

Amazon link below...

Bad Fan:  I believe the culprit of the Regulator being burned is probably the fan because if the fan is struggling to rotate it's probably pulling more Amps, to try to rotate, which in turn will draw more power, which will create more heat.

Replacement fan:

Blower Motor part #

Here is a link to the Blower on Amazon:
Amazon: Blower Fan only, no Regulator

Note: you can also buy the blower motor with regulator attached.


Blower motor part # OEM:  64119227670

Youtube video that really helped me get to the Blower fan: 

Thanks to : Leo Perez, for the good video.

Let me know if you are going through the same thing, I am curious to know how many people have gone through this...  Thanks,


Link to Amazon Blower motor, please note, this particular motor doesn't come with the heater, with a heater it's more expensive.