I recently acquired a 2003 Mercury Sable from a friend and there is a problem with the air conditioning. The car has digital controls. I select the Max AC button, turn the temperature all the way down (60) an the fan all the way up, but it only blows warm air. I can hear and see the AC compressor cycling fairly quickly. The clutch (I think) engages for about one second and it will reengage after about 5 seconds, but again, it only says engaged for about one second.
What could be the problem? I’ve read the AC system might not have enough pressure and needs to be recharged. Or… the orifice tube is clogged, bad AC pressure switch, or the actuator that closes the heater door might be disconnected.
How quickly should a properly functions AC compressor cycle?
The car was not driven much over the past year or two as it was my friend’s grandfathers.
I may end up taking it to a shop but I don’t want to get ripped off. How should I approach this?
I appreciate your input!