r6_240sx

I have a weird clicking noise when the blower is set on Face, Foot, Foot/Defroster, and Defroster, BUT it doesn't click when it's set on Foot/Face. Everything works like it should, but the noise is getting unbearable.

I'm almost positive the gears are stripped from one or more of the motors, but I'm not sure which one. The sound is coming from somewhere in the center of the dash near the climate control so I'm guessing its either the Mode door, Air mix door, or Bi-level motor.

If anyone has a for sure idea which motor it would be please let me know so I have an idea of where to look b/c ripping out the dash is a PITA.

PROBLEM SOLVED: The grinding is coming from the Bi-Level Motor (Part Number: 27736-70F00) due to the gears being stripped. Part retails new for about $50-70. I've been getting a couple of PM's about this, so I'll post up how to fix, it's pretty easy.

1. Go to Body & Trim > Instrument Panel section on the FSM.
2. Remove A/T Finisher or M/T lever boots. (2 on diagram)
3. Remove Center ventilation assembly. (7)
4. Remove Cluster lid C and audio. (8)
5. Remove Glove Box assembly. (10)

From here you can see the Bi-Level Motor. There's 2 screws and a harness holding it on the heater unit. Once removed you will have another 2 screws holding it on to the mounting bracket. The part number I gave you is only for the Bi-Level Motor (aka ACTUATOR ASSY-FRESH AIR as described on Nissan FAST), so make sure to keep the 4 screws and bracket.

Enjoy.