2013 F-150 AC Issues

It seems like it works fine in the morning, but when I go to my truck in the afternoon or for lunch it just isn't getting cold. It blows a little cold, but not near like it should.

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I was just complaining about my 13 F150 AC compared to my buddy's GMC. It's unreal how much colder his gets than mine, and this is a known fact that has plagued Ford for years it seems. Late afternoon it takes a while for my cab to get comfortable.

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my 12 is the same way. Growing up, my old man had a 94. It would get so cold it would fog the windows.

There's a low pressure R134 PSI level you're supposed to be in. If it's too high or elevates in hot weather, your truck will not cool as a safety measure. Too low and your compressor will kick on / off very rapidly.

Within the level, you want to stay on the low side of it I high humidity areas. like if it's 17-27 lbs, 20 would probably be the coolest.

You could go to Lowes and buy a can of condenser / evaporator coil cleaner and spray it on there and rinse it clean. If it's bad dusty or clogged it won't transfer heat and could cut your operating system up to %40.

You are either a little low on freon or the condenser coil is dirty.

If it's very hot and your vehicle has been sitting in the sun the fasted way to cool it off is: 1) Low your windows 2) put you fan on medium and temperature on coldest 3) After driving a few minutes raise windows and move fan speed to highest. This gets the hottest air out quicker and cools down the evap core temps.

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It seems like it works fine in the morning, but when I go to my truck in the afternoon or for lunch it just isn't getting cold. It blows a little cold, but not near like it should.

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Check out one of the F-150 forums. Just Google "F-150 AC problems". Seems pretty common unfortunately. Here's some good advice.

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On Max your AC recirculates cabin air.... As the air in the cabin gets colder so will the vent temp. If it is 95 outside the temp inside should come down pretty fast. The AC should cut off +/- 40 degrees. If it isn't coming down with a proper charge "1.5 lbs" then you have a problem. That charge of 1.5 lbs doesn't include the 6.1oz of oil. If they haven't got enough oil then 1.5 lbs charge won't be enough. They both take up the same space. You need to take it to a shop that specializes in Auto AC. There are other things in the system that could be messed up. A restriction or the expansion valve could be defective. If the expansion valve is bad then it can't meter the refrigerant properly. 

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