My 2003 jeep liberty's air conditioner blows hot

If the compressor is dry of oil (new compressors will either be shipped with or without oil) and you need to add oil you can never go wrong by adding three ounces. Once the compressor is installed turn it by hand several times. Then install the belt and add freon.

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Did it blow cold before you put it in? You need to listen and see if your compressor is engaging when you turn your ac on and off. Something simple could be that you put too much in or too little in. It could also be your compressor gone bad on it.....

Check fuses, if ok, then check for freon pressure, if low on freon, low pressure switch, will keep a/c compr. from coming on, so it don't get damage due to low on freon, recharge a/c system, if low and check for leaks.

it could be many things, maybe compressor heats up and shuts down, or cooling fans are cooling condensor or expansion valve is bad, a good tech will be able to diagnose this,

Have you charged the cooling gas recently?

Check your fuse thats a new vehicle so you might want to let the dealer look at it if its not a fuse. It should still have dealer warranty

its probley leaking in the evaporator you cannot see it without removing the dash see if anyone that you know has a freon sniffer then lacated the drain tube for the evaporator case most of the time its located on the fire wall on the right lower area with a full charge use the sniffer and see if indicates a leak

half can is low, possible cause is that fill port is clogged happens when u put sealer in sometimes, but it sounds like your system is under charged check pressure, if no reading port is clogged change port, low reading add freon,

check ac compressor to see if clutch is engaging with system turned on.if not could be low system pressure safety switch which wont allow to run because freon is to low.

I have a 2002 Jeep Liberty and after driving for about 30 minutes the air conditioner would start to blow hot air. The air conditioner clutch was sticking. I could hit the clutch and it would kick in and start to work. I went to Advance Auto and purchased a big spray can of electric motor cleaner and a big spray can of WD-40. I soaked the clutch with the electric motor cleaner, used the whole can, then soaked it with half a can of WD-40. The clutch has worked perfecty ever since.