I have a 71 240z, I finally got fixed enough to drive around town. I went to the shop yesterday and filled my AC with freon. The man at the shop said the pressure was great and it was now full of freon. But I get no cold air blowing out. I can feel the hose under the passenger side dash and they are cold, but still no cold air. My blower seems to work fine on all settings. And I have an aftermarket AC/Heat switch attached to the driverside of the center console. That seems to be working as well. Any Ideas?

I would guess that your ducting is blocked somewhere. Start by removeing the blower motor. You should be able to scope out the area and see where the problem is.

You don't mention whether the fan is working when you have it on AC, but presuming it is, and that the air IS being moved then it must be going out of the system somewhere.

That sounds very trite, but in fact should allow you to figure out the problem.

However, I would like to point out what the AC instruction manual says:

"Note: Slide Bar Switches must be to left when operating A/C."

as well as :

"240Z Custom: Air is tducted into the fresh air duct system and is directed from the dash louvers at the extreme sides and center of the vehicle."

That tells you that you must put the controls in the OFF position, which for most folks is NOT the way you would set it. Then, you only get air out the center and eyeball vents.

Hope this helps.

Enrique

I forgot to post my thread saying I figured it out. Guess what it was.

As Escanlon said ""Note: Slide Bar Switches must be to left when operating A/C.""

I was driving in my car one day and thought, I wonder what will happen if I turn the vent OFF.

Bam!!! cold air.

Thanks guys

Mark