Need help : e90 blower/final stage not working.

[gerald5ive]

Hi Guys, I need some help please. My blower on my e90 stopped working and I cant seem to get it working.

So the setup is as follows... Power Wire(3 wires)--->Final Stage Resistor--->Blower.

I tested the blower by putting in 12v directly and it works. I replaced the final stage with a new one from BMW. I tested the 2 wires on the harness and I get 12v when i turn on the fan. I tested the output of the final stage and get nothing.

Can a brand new final stage be faulty?

Is there anyone around fourways that will allow me to test my new final stage on their car? If you have a squeaky fan on low speed I will lubricate the bearings as well for helping. Its a quick 15min job.

Thanks

 

[Nick]

Mine is fekked too.
Summer is gona suck !

 

[NBN]

There was a bmw recall for this? Did u guys check to see if your car was affected?

 

[Nick]

ye mine went for the recall, but the wire they replace has nothing to do with the blower.


I actually think the weather kills them judging on how shaft rusts.

 

[Andre1983]

Mine did exactly the same. Had to exchange the resistor for credit, used that for oil service parts. Got one at a scrappy for a few bob, working perfectly.

Sent from my SM-J720F using Tapatalk

 

[Nick]

i need to go hunting for a used on too.

 

[gerald5ive]

So shout out to my man @Jody for allowing me to test on his car. That man is a legend.

So my fan and both old/new final stages are working great. All fuses seem to be fine as well. My car did go in for the recall a few months ago.

Any ideas gents?

 

[gerald5ive]

Solved : @Spiro found the blower recall document that showed the procedure for the repair. From that I was able to trace. Turned out to be a faulty ground wire.