Originally Posted by Chevy 84
On my '84 Camaro, when I bought the car, the previous owner had taken the AC out and hacked of the compressor. When I turn the controls on inside for the heater or defrost, I get nothing. Is the heater and defrost somehow connected with the AC system? If not, what could be the cause of this? I'm really not concerned with the AC for right now since I'm in Europe, but I gotta have the heat and defrost.
Depends on how hacked up the car is. The heater system used with A/C differs from the heater in non-A/C cars. On A/C cars, the flapper doors inside the air distribution box are opened and closed with vacuum servos. If the vac hoses have been disconnected or misrouted, the heat and defrost won't work. Also, on A/C cars there is a heater valve that controls water flow into the heater. Again, without the vac hosed connected correctly, this won't work either.
You didn't say what doesn't work. Does the fan motor run? If not, the wiring is disconnected or misrouted also.
Bottom line is that the heater and A/C are interrelated and you can't just hack one out without doing some things to keep the other working.