I'm guessing your talking about the A/C compressor? If so, you can unplug the 2 wires going to the compressor clutch and apply 12volts to the clutch end of the wires to see if the clutch engages. If it does this rules out a bad pump. A number of other things can be wrong: maybe a bad pressure sensor or it's low or high on refrigerant.
Needs a recharge.
SOURCE: air blowing warm in 2001 dodge dakota
get the a/c condensor recharged with a freon substitute, i use "red-tek 12a refrigerant", it is much safer than freon and is ozone friendly.
SOURCE: ac compressor won't engage
the ac compressor has a safety switch built in it to keep it from coming on if the liquid level of freon is low this keeps the compressor from overheating and going out all together. try hooking up a can of R134a and turn the can upside down so that the liquid flows in and the compressor should kick in with almost one full can.
SOURCE: 99 VW Beetle blows warm air when you start air conditioner
your condensor fins could be blocked by leaves or other debris on the outside. this component is located right behind the radiator. there could also be an overcharge or under charge in the system. make sure that when you charged the system that you used a good set of gauges to check the system pressures. Also check and make sure that there is not a blockage somewhere in the lines, Usually if there is there is a fine layer of ice surrounding it.
SOURCE: AC IS BLOWING WARM, BLOWER OK
You have a temp door not open.This could be vacuum related,or it could be a temp door actuator motor gone out.If you are mechanicaly incline,look under dash,behind the glove box and all the way across the ac/heater box/duct.You will find witch vacuum servo,or actuator motor controls the temp door by process of elemination.Move each control (temp,defrost,floor vent recirculation,max air,etc.Watch each one underneth the dash until one of them does not move,this one will be the one to work with manually.Disconect actuator motor completley,or pull the servo to make the door move.If it is a actuator motor,after you remove the motor,you will see a arm type mechanisum to move.This will tell you for sure that this is the actuator to replace.If it is a vacuum servo that is not moving,check for a bad vacuum,or vacuum switch on the ac control/Be sure you have good vacuum under hood going to the firewall(near windshield)Also there might a check valve near the firewall that is bad,or vacuum hose sucked together or split.If I can help you any further.let me [email protected]
SOURCE: AC blowing warm air
When they refilled the refrigerant did they put die in it to check for leaks, it sounds like there may be a leak.
Start with the compressor. Does it engage when you turn on the A/C?
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