My heater/air conditioner fan is noisy

85

Asked by Feb 03, 2012 at 07:34 PM about the 1989 BMW 3 Series 325i

Question type: Maintenance & Repair

My heater/air conditioner fan works great on 1 & 2, but any higher setting gets progressively noisier (and doesn't generate any additional air flow).
Before I order a new fan motor, has anyone run into that situation themselves?

2 Answers

3,135

I've done this job 6 times now and it gets easier every time. It's your blower motor. The e30's get filthy over time and the heat resistor gets covered with grime, thus having a bad signal. You will need some non-flammable electrical parts cleaner and some patience. The blower housing is located in you firewall at the back of your engine bay. I believe there are 5-7 bolts that hold the cover down. The blower is located with a plastic shroud, be careful of the plastic retaining clips. They are both fragile and a pain to put back on correctly. The resistor is below it, and looks like a wire coil. Clean it all. Using the flammable variety can turn your cleaning job into a fire breathing dragon very quickly at this point. Test the blower with the cover off and reassemble. Have fun!

25

may be somting inside or damesh in the motor

Your Answer

Add photo

Related Questions

Search BMW 3 Series Questions

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,280
#2 Robert Charlson
Robert Charlson
Reputation 1,440
#3 Michael Branan
Michael Branan
Reputation 1,150
View All

Related Models For Sale

Used BMW 5 Series
592 Great Deals out of 14,886 listings starting at $1,000
Used BMW M3
57 Great Deals out of 1,919 listings starting at $2,250
Used Ford Mustang
362 Great Deals out of 44,353 listings starting at $1,000
Used Honda Accord
812 Great Deals out of 81,598 listings starting at $899
Used BMW 6 Series
93 Great Deals out of 3,247 listings starting at $4,895
Used BMW 7 Series
168 Great Deals out of 5,947 listings starting at $3,400
Used Chevrolet Camaro
282 Great Deals out of 38,308 listings starting at $1,250

Used Cars For Sale

2017 BMW 3 Series For Sale
21 Great Deals out of 8,333 listings starting at $27,877
2016 BMW 3 Series For Sale
210 Great Deals out of 4,762 listings starting at $21,999
2015 BMW 3 Series For Sale
27 Great Deals out of 857 listings starting at $16,751
2014 BMW 3 Series For Sale
181 Great Deals out of 3,535 listings starting at $11,980
2013 BMW 3 Series For Sale
260 Great Deals out of 4,422 listings starting at $10,900