Climate Control

[G35_Coupe]

'90 Q45

I can't get the climate control to turn on the A/C, or blow air through the air ducts.

Trying to fix a friends car.The climate control worked the way it should then it would work on and off. Then for the past year it hasn't worked at all.

When I started working on the car the climate control display didn't light up. The only thing that work was the defroster. I replace the climate control with a junk yard one. It does the same thing as the original one but this one the display works.

The blower motor works but I can't get it to blow through the vents.

[Q451990]

The display failure is typical, but the other part is not. It sounds like you have a bad door actuator...

If you don't have the factory service manaul for the '90 Q (all of them had one in the compartment between the rear speakers) you can download the FSM for the '94 at http://www.nicoclub.com/FSM/ to put it in the self test mode and see what that tells you.

Good luck!

Heath

[G35_Coupe]

I took the blower motor out and that door works. The air door control flap move went i select defroster, and the blower motor turns on.

When I select another position the blower motor turns off and the flap moves back to the original position.

I never checked the A/C system for freon but would that effect the climate control?

[Q451990]

Refrigerant charge won't cause the climate controller and actuators to work differently. Try the self test to see what code(s) it gives you.

Heath