How to Replace an AC Pressure Switch

Schedule AC Cycling Switch Replacement
Service Area

$139.96 - $390.56

Price range for all vehicles
Average rating from 7 customers who received a AC Pressure Switch Replacement.

Air conditioning pressure switches are designed to protect the A/C system against pressure that is too high or too low. There are both high pressure and low pressure switches; some vehicles are equipped with just a high pressure switch while others have both. Incorrect pressure can damage the compressor, hoses, and other A/C system components.

The A/C pressure switch is a type of device called a transducer, which changes internal resistance in response to changes in pressure. The clutch cycling switch measures A/C pressure near the evaporator outlet, and is often mounted on the accumulator. If the incorrect pressure is sensed, the switch will open the A/C compressor clutch circuit to prevent operation. Once the necessary repairs are made to bring the pressure into specification, the switch will allow normal clutch operation.

The most common symptom of a failed A/C pressure switch is an inoperative compressor and lack of A/C.

Part 1 of 3: Locate the A/C clutch cycling switch

In order to safely and efficiently replace your A/C pressure switch you need a couple of basic tools:

locating the pressure switch

Step 1: Locate the A/C pressure switch. The pressure switch can be mounted to A/C pressure line, compressor or accumulator/drier.

Part 2 of 3: Remove the A/C pressure switch

disconnecting the negative battery cable

Step 1: Disconnect the negative battery cable. Disconnect the negative battery cable with a wrench of ratchet. Then set it aside.

removing the electrical connector

Step 2: Remove the switch electrical connector.

unscrewing the switch

Step 3: Remove the switch. Loose the switch with a socket or wrench, then unscrew it.

  • Note: Typically, the A/C system does not need to be evacuated prior to removing the A/C pressure switch. This is because there is a schrader valve built into the switch mount. If you have any doubt as to the design of your system, consult the factory repair information before switch removal.

Part 3 of 3: Install the A/C clutch cycling switch

installing new switch

Step 1: Install the new switch. Screw in the new switch, then tighten it until it’s snug.

replace an ac pressure switch

Step 2: Reinstall the electrical connector.

Step 3: Reinstall the negative battery cable. Reinstall the negative battery cable and tighten it.

turning on the ac

Step 4: Test the A/C. Once you’re finished, turn on the A/C to see if it’s working. If not, you should have your A/C system diagnosed by a trained professional.

If you’d rather have someone tack the job for you, the team at YourMechanic offers expert A/C pressure switch replacement.


Next Step

Schedule AC Cycling Switch Replacement

The most popular service booked by readers of this article is AC Cycling Switch Replacement. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent AC Cycling Switch Replacement reviews

Excellent Rating


YourMechanic AC Cycling Switch Replacement Service

Average Rating

5/5

Number of Reviews

7

Rating Summary
7
0
0
0
0
7
0
0
0
0

Ben

40 years of experience
1144 reviews
Ben
40 years of experience
Audi A6 Quattro - AC Pressure Switch - Houston, Texas
Very thorough work to find out the real issue so that you do not just replace some costly component.
Mercury Milan - AC Pressure Switch - Humble, Texas
Outstanding

Tim

29 years of experience
45 reviews
Tim
29 years of experience
Audi A6 - AC Pressure Switch - Marietta, Georgia
Great service

Alex

15 years of experience
435 reviews
Alex
15 years of experience
Audi A4 - AC Pressure Switch - Plano, Texas
I will strongly recommend Alex, he is so professional, and did service in timely manner.

Bryant

11 years of experience
321 reviews
Bryant
11 years of experience
Chevrolet Cavalier - AC Pressure Switch - Indianapolis, Indiana
Very knowledgeable and very professional.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE