So I replaced my check valve and to my glee my a/c blows good and hard I recharged it with refrigerant and thought I was good to go. Turned on the A/C and did notice it was getting a little colder but no so much. I noticed the box next to the refrigerant valve gets cold and the lines get hella cold, however I noticed alot of cool air coming out of this area:


is it just a cracked/worn O-ring?

 

well when you crack the system open your supposed to vacuum the system out and before you refill it also buying the cans from the store is not the best way because its theres no way to tell how much you put in there heres an example i changed my whole system had it charged and it made the car cool but not cold i took it to another place and it was about an oz off the added a little extra and now its blowing at 40 deg all day long

 

Nice. I dont think there was any refrigerant in it to begin with, the previous owner was stupid enough not to buy a vaccuum check valve for 7 years so im quite sure there was NO refrigerant in it before I filled her up. So I still dont know, is the air coming out of it bad?Is it just normal? The maro A/C is different then my Explorer A/C

 

So you added refrigerant to a system that had refrigerant in it all ready or one that was empty. When you vacuum the system out your not doing to pull out the old refrigerant your doing it to draw the mositure out of the system. Any empty system will get draw mositure into it. If the system was not empty then your OK. The only down side you don't know how much you have in the system. An overchaged system will not work well.

 

should I just vaccuum it all and just recharge it all over?

 

You could try that. But unless you have the proper tools to do it right, you won't get a complete vacuum job done.

In my personal experience, it is always best to take it to a shop that has all the proper equipment, and let them vacuum it out, check for leaks, and recharge it to the proper amount. They can also add a little dye to the system that will pinpoint any leaks after a week or so.

 

Cool thanks GW

 

Any chance you have replaced the receiver/drier recently? I replaced my and noticed a significant improvement.

 

Why did you have it replace? As a rule it is very hard to diagnose a bad Drier. The driers only job is to remove moisture that gets into the system at the time of manufacture. The receiver part is just space so there is no way that can be bad?

 

I replaced my reciever/drier because the system had been cracked open many times (ex new compressor was put on) and when you crack the system open you let in moisture, and for me the 16 year old part was used up. I am under the understanding that it has a dessicant in it, much like the ones you find in boxes that say "do not eat" on them. The reciever/drier can only absorb so much moisture before it becomes unable to properly do its job. If i am mistaken, feel free to correct me but this is what i have learned.