The low pressure side switch is located before the AC compressor, while the high pressure switch comes after the compressor. You will find the low pressure AC switch on the low pressure side (smaller pipe) and the other on the high pressure side (large pipe). The AC pressure switches are located on the AC pipes on both sides of the AC compressor. RELATED: 6 Symptoms of a Bad AC Compressor AC Pressure Switch Location Listen for the distinct clicking noises from both under your car’s dashboard and in the engine compartment, telling you that the switch is turning the compressor off and on. It will sound like the clicking occurring when the compressor normally activates, except the air won’t work. If the compressor is clicking off and on, you are going to notice some strange sounds from the engine and under your dashboard. However, this problem is also caused by low refrigerant levels, which should be checked regularly. However, when the AC pressure switch goes bad, warm air might be all you get. When you turn on the air conditioning, you expect to feel cold air pour out. However, many components make up the air conditioning system, so your problem could be entirely different. What’s worse than the air conditioning working intermittently? How about when it stops working at all? If your AC doesn’t run, the refrigerant pressure switch sensor might be defective. RELATED: 9 Causes Why Your Car AC is Not Blowing Cold Air 2.
To become comfortable again, you will need to have the switch replaced.
Or, it might only work occasionally, leaving you hot most of the time.Įither way, when the air conditioning only offers intermittent usage, it’s a good sign that the AC pressure switch is faulty. You might notice that the system starts up and cuts out for a short time. This AC system symptom can show up in numerous ways.
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