I'm trying to figure out the cause of why my TL won't modulate from mixed front, legs blowing to defrost, etc. The filters are changed ( the previous owner never had that don...can someone say dirty!).

Anyway, when I click the defrost button on the control panel, you can hear that all familiar sound where the air is being directed to the front panel where the vents are. However, no air escapes. This regardless of which button I click (mixed air, defrost, front, etc.) there is no change in the amount of air exiting.

Air currently comes out the most outside vents on the dash near the window. The air comes out at full power. The more medial vents (close to the middle), there is less air, the most medial vents (middle of car) has less air still exiting.

I hear no clicking sounds under the glove department. Any ideas?

Thanks...

 

Try the AC Diagnosis System:

 

I was just reading up on that. I'll try it and get back. Thanks! That's in section 21 of the Acura Manual, correct?

 

Where can I buy used parts. I need the motor assy mode (Mode Control Motor) but don't want to buy new. I can't seem to find this part used anywhere, but maybe I'm not searching the correct words. The part # is 79140S0KA01

 

^ its probably not broken, just stuck from the grease drying up. Take it out and regrease it.

Be sure to use plastics compatible grease.