AC not blowing cold after engine wash(prep for show tomorrow)

[05on20s]

Trying to get my truck ready for Carlisle tomorrow so I went oh ahead and used some degreaser on on my engine bay to clean it up. I covered the intake, Alternator, and fuse box. Lightly watered the engine bay, degreaser, and then watered it off but not hard. Engine bay cleaned up fine but when I went to start the engine, the AC compressor started making a really funny noise. It would make a loud sound and shoot out steam it looked like. Did it a few times. I then checked the inside of the cab and the AC was blowing warm. I let it dry off for abour an hr and it is not blow cool but not cold. AC compressor comes on and stays on (may cycle a little but still runs). Small ac line gets ice cold but I am not seeing any water drip out of the condenser like I normally would. All fuses in engine bay check out. Any ideas would be greatly appreciate because I will be on the road early tomorrow.

[05on20s]

Damn that is strange because I have washed the engine bay at least 2 times and never had an issue.

[05on20s]

Well went and check the freon and looks like it was a little low. Just barely in the green. Added a single can and now it is blowing cold. Time will tell but hopefully this was it.

[Jsdirt]

What truck is it? I'm not seeing anything ....

 

To me that sounds like some water got in the low pressure cutoff switch and allowed the compressor to run continuously - that usually causes SUPER cold temperatures, which causes the lubricating oil to "slug" when it should be a fine mist carried through the system, like pre-mix 2-stroke engine. Slugging oil does bad things to compressors - usually after that happens, the compressor is forever noisy, best case, or totally trashed, worst case. It can also cause super high HIGH side pressures .... which can blow off the high pressure relief valve.

 

Steam coming out tells me the high pressure relief valve on the compressor blew. Check between the condensor and radiator for built-up debris like leaves or pine needles (depending on what part of the country you live), check the condensor and radiator for anything that could restrict airflow, and check that the fan clutch is operating properly.