Q: Hot air from the AC

asked by on

The AC is blowing out hot air. It could be the expansion valve, but I am not sure.

Having a broken A/C is very unfortunate, not to mention uncomfortable. There can be several reasons why your Mercury’s Air Conditioning is blowing out hot air and you are correct to believe that the expansion valve could be one of them. However, it is also just as likely that the A/C system is low on refrigerant. To determine if the expansion valve is indeed the problem, I highly recommend enlisting the assistance of a certified mechanic to stop by and look over your vehicle. They will be able to diagnose the A/C system in your Mercury Montego in person and determine exactly why it is not blowing cold. They will also be able to assist you in making the necessary repairs to keep you and your passengers cool on those hot days.

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. Hot air from the AC

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: Where is the A/C compressor low pressure side service port?

Hello there, the answer to this problem is a bit complex. When the system is low on refrigerant, in more cases than not, there is a leak that is causing the low levels. Simply adding refrigerant may only work for...

Q: The engine is off, radiator fan still works, AC issues

Since the wiring system has been modified and the fan wired hot at all times with the key on. I recommend having a mechanic diagnose the real problem with the wiring since it may be an issue with the internals...

Q: Rattling, loss of power, smells of rotten eggs, dash lights on

The first thing to check is the Check Engine Light to see why it is on. The smell of rotten eggs is an indication that the catalyst is bad and the rattle may be that the catalyst is broken up...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.