This could mean that your heater core is going bad. Had the same problem with my Dodge ram 1500. It could also mean that the AC compressor clutch is slipping. It may only slip when it is first turned on because then it tries to goes from zero RPM to normal speed in a split second.
The ac pump may be seized up.
turn the car on
bad alternator or ground to ac compressor
What do you mean smoke test? If u mean a hot box, roll a few fattys, roll up the windows, turn of the ac, and let er rip
If you have the defroster on, the ac comes on automatically.
You have a blocked radiator.
yes it does AC needs some power from engine so it happens....
the ac in the car cools, the fact you have set a higher temperature than the ambient tempereature means that the car's heater is working and so is the ac, if you wish to heat up your car, turn the ac off.
The engine may be in need of a tune up.
Did you check the AC fluid? That is sometimes the problem.
Check the driver belt, tensioner and the a/c clutch and compressor.......
if you are in a car turn on the ac or have a portable fan with you