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

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・Fair and transparent pricing

Get a quote

What others are asking

Q: We have taken our Honda Pilot (2008) to the dealer 3 times for the air conditioning.

It may seem odd the costs are the same but the first visit was to fill up the system that leaked out all the freon. The second visit wat to see if the leak could be located and it was...

Q: I've replaced everything from tie rods, upper and lower ball joints, the whole cv axle including cv joints and boots, and I'm stil

Hello, thank you for writing in. The noise you are hearing may be a result of a wheel bearing or a shock issue. There are several tests that can be done while the vehicle is parked, and some while it...

Q: Transmission

Check the fluid level. Inadequate transmission fluid causes shift problems. Due to the number of miles on the transmission, if you have never changed the fluid or filter, of course there is always the possibility of a plugged filter and...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...