A/C not blowing cold?

2013 FORD F-150
145,000 MILES • 3.2L • V6 • 4WD • AUTOMATIC
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JOHN VICKERY
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  • 1 POST
When outside temperatures get above 75 degrees my A/C will only blow luke warm air. If it is under 75 degrees it will start blowing cold again.
Jun 20, 2023 at 9:38 AM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,128 POSTS
It sounds like the system is a little low on refrigerant or you have a programming issue. I would check the low side pressure by following this video.

https://youtu.be/4EqdrBVb0sY

and

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

If the pressures seem okay, I would try resetting the HVAC system by following this guide:

https://www.2carpros.com/articles/step-by-step-guide-to-reset-your-cars-hvac-system-an-essential-for-every

If that doesn't work, we need to do a CAN scan which will go over the HVAC system, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ


Please go over these guides and get back to us because it might be the temperature sensor. Check out the images (below). Please let us know how it goes.
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Jun 21, 2023 at 11:13 AM
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JOE VICKERY2
  • MEMBER
  • 1 POST
The refrigerant was low and when I added more it fixed the issue for now.
Jun 24, 2023 at 7:16 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,128 POSTS
Thanks for letting us know, we are here to help, please use 2CarPros anytime.
Jun 25, 2023 at 11:44 AM