I drove my 71 cutlass today on the road for the first time since I baught it, I was wondering what is wrong with it since it is not blowing any hot air. The Fan motor is not working and when it is at running temp there is nothing. Is this a heater controll or a fan problem?

 

Can you feel hot/warm air from the center bottom air duct, if you have heat selected or defrost, you should feel warm/hot air even without a fan. If you can it isn't anything other than the blower motor (or so). The fan motor should blow anytime you select it to on.

 

I got nothing on defrost or heat not even cold air.

 

You should have an air inlet door in the plenum, mine is vacuum operated, yours is or open closed by a cable. take a look at that.

 

No fan at all, check the fuses