I have a 2002 BMW M3 6MT with 93k.
I've been having an issue with my A/C: with the system on and the output selector set for the middle (in your face) position only, I get
cold air out of the side vents and
hot air out of the middle vents. If I switch to the top (windshield) vent, I only get
hot air towards the windshield. If turn on both the bottom (foot) and middle (face) outputs, I get
cold air out of the middle, and
hot air from the foot outlet; by "hot" I mean
hot.
Yes, the center dash dial selector is set to the proper position.
The refrigerant level is fine, and the fan and compressor seem to be kicking in when they're supposed to.
Engine temps are normal.
When I get cold air, it's cold, but I shouldn't be getting hot air from other vents at the same time.
I suspected it might be the final stage resistor, but from what I've read (and previous experience) a bad FSR affects fan speed or shuts the fan down altogether.
I'd posted this on bimmerforums, but the most helpful suggestion I got was to check the heat selector dial
