A few recent Automotive Air Conditioning questions
Oldsmobile Aurora A/C Blows Warm After Car Sitting
My car has been sitting for a long time, and now the A/C blows warm. I recharged the...
My 2001 Chevy Venture van a/c Blows Warm
The air conditioner is blowing warm air. I need to know where the high and low side
pressure service fittings are so that I can add freon
Problem With My 1999 Chevy Malibu A/C Compressor Turn Off
a/c switch or (button) inside the car its little
light is always shutting off and on which shuts the air conditioner off...
Grand Am No Heat from Vent Antifreeze Not Low or Overheating
The gauge on the dash works.
The engine gets hot, and the car has not over heated. Is my problem...
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The primary function of the heater and A/C system, also know as HVAC,
is to provide air temperature comfort inside your car or truck.
All system have mainly the same components:

Compressor
Evaporator Core
Condenser
Freon, Hoses and Lines
Control Head
Heater Core
Temperature / Mode doors
and a number of other hoses, lines, fittings, valves, motors or actuators and sensors.

All of todays newer cars and trucks are electronically controlled by the control head.
This is the panel in the dash that you use to change all functions.
This panel sends signals to the temperature and mode door motors / actuators to
direct air flow and change the temperature of the incoming air. Signals to the
Powertrain Control Module (PCM), or Body Control Module (BCM), and then to the
compressor to turn it on if all parameters are met. These parameters include many
different things such as outside temp, engine temp, throttle position, engine speed,
and many others. Any one of these things can prevent A/C compressor engagement.
My 2006 Chevrolet Equinox Vents Only Blow Hot
I cannot change the heater A/C vents from warm to cold on my Equinox. Will change
from vent to floor and defrost. Is it temperature door motor that i can repair myself...
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