A/c issues

F150orelse

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Ok I’m having this problem sometimes. I get in my truck the a/c was blowing cold, 30 minutes later it starts blowing hot so I then turn the a/c off and on a few times it will then start blowing cold. I do this for 3 hours, after I stop and fueled up I noticed my truck wasn’t draining condensation from the a/c but it would blow cold a few minutes and it was while I was idling while filling up. So this morning I get in my truck and let it idle while I turned on the a/c it still wasn’t dripping nor was the compressor kicking on, after turning the a/c on and off compressor kicks on and the condensation is starting to drain. Rewind to a month ago, we took the f250 to Atlanta to the aquarium there, the a/c worked flawlessly. So anyone have any ideas? I have also replaced all vent motors 3 months ago.
 

6.0 Tech

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Probably the AC pressure switch. Iys right,down by the air,box. Theyre junk, will typically set a p0532 code, that you may need a good scan tool to read. Ive done a ton of them...

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F150orelse

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Probably the AC pressure switch. Iys right,down by the air,box. Theyre junk, will typically set a p0532 code, that you may need a good scan tool to read. Ive done a ton of them...

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I’ll try that!
 

andharri

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I had, what sounds like, a similar issue. A/c would work just fine on start up and then at some point after it warmed up would cut off. Sometimes it would come back on sometimes it wouldn't.

I ended up checking the gap of the ac compressor clutch and it was too large. Shimmed it back to spec and it solved all issues. If I remember correctly, it was so far out of spec that removing the shim washers currently in place was all I needed to do, didn't actually need to buy additional ones.
 

F150orelse

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I had, what sounds like, a similar issue. A/c would work just fine on start up and then at some point after it warmed up would cut off. Sometimes it would come back on sometimes it wouldn't.

I ended up checking the gap of the ac compressor clutch and it was too large. Shimmed it back to spec and it solved all issues. If I remember correctly, it was so far out of spec that removing the shim washers currently in place was all I needed to do, didn't actually need to buy additional ones.

I’ve read about that as well, I’ll try that next.
 

F150orelse

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I had, what sounds like, a similar issue. A/c would work just fine on start up and then at some point after it warmed up would cut off. Sometimes it would come back on sometimes it wouldn't.

I ended up checking the gap of the ac compressor clutch and it was too large. Shimmed it back to spec and it solved all issues. If I remember correctly, it was so far out of spec that removing the shim washers currently in place was all I needed to do, didn't actually need to buy additional ones.

Do you remember what the gap specs should be?
 

Motostroker

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4d08ebfb3747696de5d1198712ea6b43.jpg


My AC is doing the same. I’ll try the sensor first.

I think it’s the EVAP tho


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6.0 Tech

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4d08ebfb3747696de5d1198712ea6b43.jpg


My AC is doing the same. I’ll try the sensor first.

I think it’s the EVAP tho


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Nope, thats the code for the pressure sensor, its in the manifold lines, just behind the air box

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F150orelse

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lol I wish the best for you! just saying that was my story to a tee and then my dash came off. at 39k miles. perfect timing for it not to be ford's problem.

Man! I used my friends a/c machine I only recovered 1.41lb’s it holds 1.63lb’s so I’m sure it’s leaking! Filled it up after a good vacuum, it’s doing the same thing! I’m thinking the evaporator temp sensor, which also requires a dash pull unfortunately.
 

F150orelse

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Damn, sorry bud. Ive had quite a few that have done exactly what youre describing, and it was the switch.

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So I replaced the evaporator temperature switch, the compressor cycles on and off like it’s suppose finally after driving it yesterday it was fine. But I drove it to Gatlinburg this morning I have to turn the a/c on and off a lot to get it to cool! In the city driving it does fine stays cool the whole time. **** is driving me crazy.
 

F150orelse

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**** is weird, a/c worked perfectly the drive home from Gatlinburg Tuesday. I’ve been in the truck all week and it’s worked fine since.
 

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