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.

A: Unfortunately, the evaporator temperature s...

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How Much Does Using the AC Affect Fuel Economy

There are several variables that will influence the answer to that. It depends on your vehicle, how you drive, where you drive, and how hot it is outside. But there are some things that are certain: operating an A/C system...

Q: Brake noise. Lost all brakes while backing up

Check to see if the fluid is low and look at the back of both wheels to see which brake cylinder blew out and lost the fluid pressure.

Q: Battery Light

Hi there: In most cases when the battery light comes on, it's an indicator that the alternator is faulty or starting to show signs of wearing out. If this occurs only when the RPM is revved high, it might be...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...