3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
Hey guys. My cabin blower fan makes chirping noises at
intermittent intervals. This is very anoying when it happens.
It always happens when it's under 60 deg.F outside. I never
makes this noise when it's warm or hot out. It doesn't chirp
when car is first started but starts to make noise after driving
and car is fully warmed up. Has anyone have or had this problem
with their cars?
how do you gain access to this thing? for that matter, how do you gain access to the back of the stereo unit?
The blower motor is located behind the engine. You take the micro filter our and then the housing is removed by 4 torx screws. Behind that there is another black panel held on by two torx screws. Remove that then the fan is right there. There is one screw in the top and is hard to see. After you remove the screw remove the two clips and the front housing comes off. To remove the fan you just release the spring clip at the lower part of the fan motor.
When removing the fan you have to snake it out through the passenger side of the opening. Be carful not to break the fan, its plastic.
Just so everyone knows, the blower resistor for an E46 is on the passenger side of the center console almost against the firewall. You must remove the right footwell air duct and an air distribution motor to get to the resistor pack for replacement.
Hootie. The blower works fine on all speeds. Just makes chirping
noise which may last 5 to 10 seconds at a time. The thing is that
it doesn't do it in the warm or summer months. I'm bringing the
car at the dealer next week. Hopefully it will do it when driving
in the cooler morning temp's.
I have seen them before where the blower speed remained consistant but had the chirping, it did turn out to be the final stage unit (so irratic blower is not always a sign of a failing final stage but however is the most common sign)
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