my ac unit starts and stops

A vehicle's A/C system consists of a number of components, including the A/C compressor. The A/C does not cool without a working compressor, and the compressor does not function properly without a working A/C compressor clutch. In order to properly diagnose and fix problems associated with an A/C compressor clutch, consumers should develop a basic understanding of how the system works. Otherwise, they could spend time and money purchasing the wrong parts when they could have conducted some simple A/C compressor clutch diagnostics. The A/C compressor is essentially the working core of a vehicle's A/C system. When consumers turn on their A/C units, the A/C compressor starts to compress refrigerant in the system. This compression creates high pressure and raises the temperature of the refrigerant before it enters the A/C condenser. The A/C compressor clutch is in charge of alerting the compressor to start this compression. In other words, the compressor clutch is responsible for communicating to the A/C compressor when to start and stop operating.

The A/C compressor clutch actually has multiple components. Once the A/C system activates, the compressor clutch pulley starts to rotate the compressor clutch hub, which is a round metal piece located at the front of the clutch. The compressor's belt rides along the pulley. The compressor clutch hub attaches to the compressor shaft, which starts to rotate, creating both suction and discharge. The compressor's belt then forces the compressor clutch pulley to rotate, and that causes the compressor clutch coil to pull the hub against the pulley. The compressor clutch coil is tightly wound copper wire found below the pulley that acts as an electromagnet. These combined actions allow the A/C compressor clutch to engage the compressor and turn on the A/C. A lot of common A/C problems originate with the A/C compressor and the compressor clutch. However, before jumping to any conclusions, consumers should attempt to rule out any issues that could merely require simple fixes. If the A/C blows only moderately cool air when the temperature setting is at the coldest, owners can check a couple of things.

First, they need to ensure the cooling fans on the A/C radiator and A/C condenser work properly. They also need to look for debris that might be blocking the A/C condenser and keeping cold air from passing over it. Finally, consumers should check the cabin air filter to ensure it is free of debris and contaminants. Although a completely non-working A/C system could certainly indicate a serious problem, sometimes another culprit exists. Consumers should examine A/C systems to determine that no breakers or fuses have tripped or blown because those issues prevent power from running through the A/C system. A/C compressor clutch problems regularly occur when routine maintenance does not take place on the vehicle's A/C system. As a result, the A/C compressor clutch is often to blame for common A/C problems. Suction pressure is too high Discharge pressure is too low Compressor delivers inconsistent pressure to the refrigerant Addition of a shim to close air gaps between the hub and pulley Replace A/C compressor clutch

If A/C compressor has voltage, probably defective compressor clutch Replace A/C compressor clutch A/C compressor clutch coil receiving inadequate voltage Overheating of internal winding Slippage of hub against the pulley A/C compressor clutch may have a defective pulley bearing With regards to most of these issues, the best solution is often to replace the A/C compressor clutch.
car ac parts chinaHowever, qualified technicians are sometimes able to replace or fix individual components within the A/C compressor clutch.
ac unit for outside eBay has a wide selection of A/C compressor clutches and its components for purchase from a variety of reputable sellers, including clutches and related parts made by top brands like AC Delco, Motorcraft, and Four Seasons.
outside ac unit will not stay on