Skip the auto shop - Our mechanics make house calls

Q: A/C Compressor Turning On/Off

asked by on

My A/C compressor will randomly cycle on/off. I've been told it's the Evaporator Temp Sensor by a shop I trust in town. They are letting me buy the part and bring it to them. Is there an alternative name for the Evaporator Temp Sensor? I am having a hard time finding a part on the auto part retailer sites.

My car has 160000 miles.
My car has an automatic transmission.

Unfortunately, the evaporator temperature sensor is what that part is commonly known as in the industry. It is possible that this sensor is integrated into the evaporator and may need to be purchased as one unit.

I would also recommend to make sure that the refrigerant level is full as this can cause the compressor to cycle on and off as well. If the refrigerant level is low, this is certainly the cause of your issue and I would recommend having the system recharged.

If the EVAP temp sensor is the actual cause, I would recommend searching for an evaporator assembly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Looking to install an A/C system in a 2007 GMC Sierra work truck. Any idea where I can find a shop manual or video tutorials?

Hi there. The best thing to do is locate a 2007 GMC 1500 Sierra that has a complete A/C system and take pictures of the entire system. Then you can go and buy all of the parts needed to install...

Q: Car stalled in stop and go traffic.

Your car may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle....

Q: Gauges fluctuate wildly then car turns off.

Hello. Though there are a lot of common issues that can cause this, the most common is a voltage issue. Low voltage will cause each of these symptoms and codes you are getting. I usually start by testing the ignition...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...