How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask A. Penland Your Own Question
A. Penland
A. Penland, Ford Senior Master Technician, ASE
Category: Ford
Satisfied Customers: 6667
Experience:  ASE Master Certified, ASE Advanced Gasoline Engine Performance
Type Your Ford Question Here...
A. Penland is online now
A new question is answered every 9 seconds

My AC was working and just stopped, it was blowing cold air.

Customer Question

my AC was working and just stopped, it was blowing cold air. I started it this morning and the blower is working but its only blowing hot air
JA: Have you checked the coolant level? Have you checked for a leak in the radiator?
Customer: no
JA: What is the model/year of your Ford?
Customer: 2010 F-250
JA: Are you fixing your F250 yourself? What have you tried so far?
Customer: trying
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 11 months ago.
Category: Ford
Expert:  A. Penland replied 11 months ago.

First, start the truck and tur the AC on and see if the AC compressor clutch is engaging please.

Customer: replied 11 months ago.
it sounds like it is
Customer: replied 11 months ago.
Are you still there
Expert:  A. Penland replied 11 months ago.

Is it cycling on and off while the engine is running every 3 to 5 seconds?

Customer: replied 11 months ago.
Sounds like it is
Expert:  A. Penland replied 11 months ago.

There is a leak in the system. Even though the compressor is engaging, if there is no Freon or very low Freon level in the system, it will not cool down. You will need to have the system properly checked for leaks. We have seen issues with the evaporators leaking in these F250s. Sometimes you will smell the Freon inside the cab when the blower motor is running.

Customer: replied 11 months ago.
I checked the level of freon and it was good
Expert:  A. Penland replied 11 months ago.

Do you have a manifold gauge set to check pressures when the engine is running?
How did you check the charge level?

Customer: replied 11 months ago.
No I used a fill can of freon
Expert:  A. Penland replied 11 months ago.

You will need to check the pressures on the high side and low side of the system. Just checking the Freon level with a fill can is not the proper way. If you have a restriction in the system, it will not cool. And if you have a failing compressor, the system will not cool because the pressures do not reach the proper specifications and the low side cycle switch and the AC cut out switch will shut the compressor off if the pressures are not at the proper levels.