A number of things contribute to a properly operating A/C. The purpose of this thread is to help you get the type of help you need based on your A/C issues.
- -The system must be full of refrigerant. If the compressor is cycling excessively (click on, click off, click on, click off), The A/C system is most likely low on charge. Typically there is a leak in the system that has depleted the refrigerant. You might consider the use of dye to help find the leak. Often the aid of an A/C professional is needed when finding and fixing leaks. A/C Clutch Clicking On and Off
- -There must be air flow both inside and under the hood. The A/C condenser needs air moving across it at any time the A/C is active. If the electric cooling fan(s) or fan clutch are faulty, A/C performance will be diminished, especially at an idle. The inside blower fan must also be working to distribute the cold air.
- -The temperature blend door must be positioned correctly. If the A/C system is full of refrigerant and operating correctly, yet heat is being delivered, the blend door should be suspected. To a lesser degree, the heater valve might also be faulty.
- -The air distribution system must work properly. If all the air flow is only delivered at the defroster vents, the vacuum source needs to be investigated. A faulty mode door vacuum diaphragm can cause insufficient air delivery to the dash vents, while other air flow remains good.
If you wish to find additional detailed info about A/C this link might be helpful.
How does an A/C work?
Linear Mode
