Skip the auto shop - Our mechanics make house calls

Q: AC works part-time

asked by on

There dealership put freon in the ac about a month ago. When I'm driving the ac blows cold like it's suppose to but as soon as i stop at a light the compressor kicks off and just blows extremely hot air. Once i start driving again, it kicks on and blow cold. Do i have a bad sensor?

My car has 99850 miles.
My car has an automatic transmission.

You’ll need to see if the cooling fan is running with the A/C on for your 2007 Chevrolet Malibu. If the fan is not running, then the A/C will get warm when you are at idle and no air flow is going across the condenser and radiator. It may be a low speed fan motor or relay problem. Have the AC system diagnosed by a local expert, such as one from YourMechanic, to verify which component is faulty and have the correct repairs made.

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: How do I eject a CD?

To eject a CD from your vehicle’s CD player, press the eject button. The eject button is a symbol of an arrow pointing up, and is located directly next to the CD slot. When you press the eject button, the...

Q: Powertrain sensor fault

Hello, thanks for writing in. From what you describe it would appear that your transmission may not be engaging. This can be caused by many things. A few common causes are a bad shifter, computer problems, solenoid or switch issues,...

Q: Can i drive my car 22mins to make it home with my exhaust pipe broke

It depends on exactly what you got. Sometimes, it is OK (I'm sure you have seen others do it) but the problem is there are other things under the car that can get damaged and it also depends on exactly...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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.