When the AC compressor doesn’t engage anymore, one problem could be the clutch.
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READ MORE: AC Compressor Clutch is Not Engaging – Causes & How to fix Testing The AC Compressor Clutch The low-pressure switch is made to cut power to the compressor clutch without enough pressure. On the other hand, there could be a malfunction without enough refrigerant. When the system is overcharged, the high-pressure switch disables clutch operation.
Incorrect Refrigerant Chargeįor the air conditioning to work correctly, the refrigerant must be charged to a particular level. The only fix would be to repair or replace what’s damaged.
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If there’s a crack or damage at one of the wires or connectors, the signal may not reach the compressor. Signals are sent through these connections to activate the compressor. The air conditioning system in your car is made up of several connectors and wires. With failure at any of these switches, the AC compressor may not turn on. The most notable possibilities include the low or high-pressure switches, as well as the evaporator temperature sensors. A malfunction with any of the switches can cause it to remain disengaged. Several switches are needed to activate the compressor clutch. Make sure the amperage matches up with the one that was blown. In this case, you would need to replace the fuse with a like one.
If the fuse blows, the compressor cannot get the power it requires to run. The compressor clutch might fail to engage for other reasons besides a simple malfunction. Reasons The AC Compressor Clutch Won’t Engage Depending on how bad the leak is, the cooling capacity will be hindered. When the clutch isn’t working correctly, the front seal can start to leak.Ĭar AC refrigerant will leak through the small openings. You may also notice refrigerant leaks if the compressor clutch starts to fail. However, it’s not impossible for the opposite to be true. In most cases, the air conditioning compressor clutch is going to break in a way that renders it impossible to get cold air flowing. You may not be able to turn on or off the air conditioner, no matter what selection you make on the control panel. If the clutch seizes up, as discussed above, the compressor can remain activated or deactivated. Inability To Turn Air Condition On Or Off If left unrepaired, it can cause damage to the serpentine belt, so you don’t want to put off fixing it. If the clutch fails to disengage, the AC will remain on when it shouldn’t. When it doesn’t engage, you won’t be able to get any cold air from the system. If the AC compressor clutch won’t engage, the clutch is going to stop moving. Additionally, this noise can indicate trouble with the bearings. The noise can resemble a squealing that occurs, especially when it first starts running. This noise may start before there are any other symptoms, giving you a heads-up. Loud Noises From The AC CompressorĪs the compressor clutch fails, strange noises occur. Either way, you should start diagnosing the problem before issues get worse. With a compressor clutch not engaging all of the time, you may get cold air occasionally, and it could fail at other times.Īdditionally, there’s a chance that there’s slightly cooler air coming out of the vents, but not enough. AC Might Work For A Short Time And Then Stop Workingīefore the AC quits completely, it might work intermittently. RELATED: 9 Reasons Why Your Car AC Is Not Blowing Cold Air 2. For that reason, a complete diagnosis is needed before replacing parts. With that said, there are a lot of reasons why cold air may be lacking. If you don’t feel any cold air coming from the vents, you may think it’s a lack of refrigerant, only to find out that the compressor clutch is to blame instead. The biggest sign is that you stop getting cold air from the air conditioner.
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When this happens, the air may be stuck on or off, plus refrigerant can leak. There may also be loud noises from the compressor or the clutch will stop moving. When the AC compressor clutch goes bad, the air conditioning may not work at all or it can work intermittently. Conclusion Symptoms Of A Bad AC Compressor Clutch
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