Q: Need AC temperature actuator replaced.

asked by on

I had an AC temperature actuator replaced around a year ago and now I think I might need a new one replaced. While I was driving, the AC stopped blowing cold from some of the vents. If the car is turned off and back on, it seems to correct the situation sometimes.

Hi there, AC blowing cold from some vents while warming up in other vents may be an indication of a low refrigerant charge level. This is what is likely happening due to low refrigerant level: The air passing over the fins of the portion of the evaporator where the refrigerant enters will be cooler than the air passing over the portion where the refrigerant exits due to the low refrigerant’s inability to cool all of the air passing through the evaporator fins evenly. This will mean you have distinct differences in air temperature coming out of the various vents. To check this you may want to enlist the help of a qualified technician, such as one from YourMechanic, who will have the necessary equipment to:

1) Determine the AC refrigerant level and compare it to the charge level specified by the manufacturer.

2) Perform a leak check to either ensure system integrity or find a leak in the system.

3) Make necessary repairs and recharge the system to the correct charge level as specified by the manufacturer and performance test the system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Need AC temperature actuator replaced.

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: 2011 Ford Transit Connect overheats, AC blows warm

Hello. Thanks for writing in about your 2011 Ford Transit Connect L4-2.0l. I have ran into so many of these vehicles with blown head gaskets. They can be hard to diagnose if they are not tested during the overheating. A...

Q: Starting issues with Chevy truck.

Hello, there are three different reasons for a no start. The first being the starter not starting the engine. Two things to check here, the base motor turns over manually and power at the starter motor. The second is a...

Q: What type and brand of oil should I use in my 2008Chevrolet suburban LTZ? Over 100k miles

The vehicle calls for synthetic oil that provides better protection and should be on your oil cap indicating the proper weights and the brand should not matter as long as it meets GM standards on the oil cap or in...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.