It's not bad A/C, but I'm used to colder in my car

CANNON1349

MECHANIC
2011 FORD F-150
3.7L
V6
2WD
AUTOMATIC
321,000 MILES

I may not have a problem here, but I did an evac and recharge on the system because it seemed like the vents should be colder. I'm getting 53.8 F coming out of the vents, Max A/C sitting in the shade. It's not bad A/C, but I'm used to colder in my car. Also there's no rear A/C vents so that makes it harder to cool down this big truck. Low side pressure cycles from about 45 to 30 PSI, high side I think was going from 150 to 250, something like that.

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

This sounds like the compressor has gone out or the system is low on charge or a fuse is bad, these videos and guides can help us fix the problem with diagrams below to show you how on your car. I have included (below) the air conditioner wiring diagrams as well so you can see how the system works.

https://youtu.be/4UjfQKvrB6Y not working

and

https://youtu.be/uZrQCGwXfek recharge

and

https://youtu.be/yrhWKlQEPWw leak detection

and

https://youtu.be/4EqdrBVb0sY vacuum and recharge

and

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Let us know what happens and please upload pictures or videos of the problem.

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Monday, March 30th, 2020 AT 3:06 PM

KASEKENNY

MECHANIC
18,907 POSTS

This sounds within the proper spec. Some AC systems do blow colder but mid to low 50's out of the vents is acceptable.

Plus the pressures that you are seeing are within range as well assuming the temp was around 75 degrees when you were doing this test.

Take a look at this chart for pressures and make sure it lines up.

Let me know if you have questions but I suspect this is okay. Thanks

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Monday, March 30th, 2020 AT 3:09 PM

CANNON1349

MECHANIC
581 POSTS

Thanks for the guids it was the AC compressor I installed a new one using this guide and that fixed it.

https://www.2carpros.com/articles/replace-air-conditioner-compressor

this site rocks!

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Monday, March 30th, 2020 AT 3:15 PM