Googenheimer
NAXJA Forum User
- Location
- Provo, UT
Well I did a search on this and learned quite a bit but still need some clarification. I have a '94 XJ that has been fitted for R134a. Not sure if it came like that from the factory. I noticed that the A/C took a long time to get cold (about 20 mins. on Max before we were comfortable). So I decided to charge it up a little. I added one can of r134 and it read about 25psi. The compressor stayed on for long periods of time but the air was nice and cold. I thought that if it was this good at 25 psi then 35-40 psi would be even better. However the opposite was true as soon as I added more the air went back to being warm and the compressor wouldn't stay on as long. So I released a little bit of the r134 out. It still seems that the compressor is noticeably reducing my performance when it clicks on and my expansion valve squawks like a 10 year old learning to play the clarinet. It's like having a seperate car horn eveytime the compressor starts working. I just added some oil thinking that that could be the problem but it's still humming along everytime the compressor clicks on. Am I still overcharged? Is that what makes the expansion valve yelp so badly? Any Ideas would be helpful. Thanks.