HELP! AC issue

[bjowensby]

My 2001 sierra ac was working normal, I went to recharge it a little since the outside temperature was rising. After I did that the AC blows hot. All the freon leaks out of the low port whenever I put more in and the high port also leaks. I got a gauge set and it read zero psi for both ports when the truck was on and off. Any help is appreciated as it's only getting hotter here

[CamGTP]

You need to fix the leaks. If it's leaking out the low and high side test ports you need to get new valves so the leaks stop.

 

Then you must suck down the system with a vacuum pump to check for other leaks in the system. If it holds the correct vacuum for 20-30min it should be good to go. Then fill the system with the proper amount of oil and R134a and see if it works. I'm sure you can youtube how to do but if you don't have the proper tools to do that you need to take it to a shop that can.

 

Adding freon just because the temp was rising is not the correct way to do things. These systems run on a specific amount of refrigerant and pressures.

[Robertabf]

Hi...

 

I had the same problem you had a few years ago.  I am not an AC tech, just a novice and so my solution isnt

a pro job or anything....I got an ac gauge set and put a little freon in to top it off and return the performance but

noticed bubbling in the low port...there is a little rubber ball in there that lets go after a while.  Since I didnt want

to pay a shop to replace the port, I just left the quick connect hose connector for the hose on the low port

and closed it.  So far it hasnt leaked and the ac has been great.

 

Since you lost all freon you would have to evacuate and recharge but then just leave the valve on the low port and high port and 

it will probably hold your freon inside the system

[sefiroxx]

The low side Bubble port is known issue. You'll need replace the pipe with a new pipe that comes with a std Schrader valve. The high side shredder valve has a valve stem in it that can be replaced.