![]() ![]() Does it start easily? Does it make any funny noises or smells? Do any warning lights on your dash board stay on after the engine is running? Lastly, during your drive listen for the same types of things. Are there any puddles or drips under your vehicle? Are there any new scratches, dings or dents you don’t remember? Is anything discolored, are your tires pudgy or getting cracked or have low tread depth? Observing all these things can help you catch problems early.Īlso, pay attention to when you start your engine. Look for anything unusual around or under your car. You should start this exercise from the moment you jump in your vehicle, even before you start the engine. Getting used to the way your car sounds, feels and looks normally can be the best way to help you detect the early symptoms of a problem so you can repair it before it leaves you stranded or does even more damage to your vehicle.Įvery week or so, it would be a good idea to turn off your radio and really focus on the feedback your car is giving you. Most of the time while we’re driving we’re so distracted by the radio, the scenery or even worse our cell phones, that we can often overlook our vehicle’s cry for help. If you’d rather have someone tack the job for you, the team at YourMechanic offers expert A/C pressure switch replacement.One of the best ways to figure out what is going on with your car is to know how it normally operates so you can tell when something has gone awry. If not, you should have your A/C system diagnosed by a trained professional. Once you’re finished, turn on the A/C to see if it’s working. Reinstall the negative battery cable and tighten it. Step 3: Reinstall the negative battery cable. Step 2: Reinstall the electrical connector. Screw in the new switch, then tighten it until it’s snug. Part 3 of 3: Install the A/C clutch cycling switch If you have any doubt as to the design of your system, consult the factory repair information before switch removal. This is because there is a schrader valve built into the switch mount. Note: Typically, the A/C system does not need to be evacuated prior to removing the A/C pressure switch.Loose the switch with a socket or wrench, then unscrew it. Step 2: Remove the switch electrical connector. Disconnect the negative battery cable with a wrench of ratchet. Step 1: Disconnect the negative battery cable. Part 2 of 3: Remove the A/C pressure switch The pressure switch can be mounted to A/C pressure line, compressor or accumulator/drier. Free repair manuals - Autozone provides free online repair manuals for certain makes and models.In order to safely and efficiently replace your A/C pressure switch you need a couple of basic tools: Part 1 of 3: Locate the A/C clutch cycling switch The most common symptom of a failed A/C pressure switch is an inoperative compressor and lack of A/C. Once the necessary repairs are made to bring the pressure into specification, the switch will allow normal clutch operation. If the incorrect pressure is sensed, the switch will open the A/C compressor clutch circuit to prevent operation. The clutch cycling switch measures A/C pressure near the evaporator outlet, and is often mounted on the accumulator. The A/C pressure switch is a type of device called a transducer, which changes internal resistance in response to changes in pressure. Incorrect pressure can damage the compressor, hoses, and other A/C system components. There are both high pressure and low pressure switches some vehicles are equipped with just a high pressure switch while others have both. Air conditioning pressure switches are designed to protect the A/C system against pressure that is too high or too low. ![]()
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