Please Help. Refilling A/C with R-134a 94 Jeep Cherokee Country

[jinx10000]

I changed my air conditioner over to R-134a last summer. I had a wreck so I had to buy a new condenser. I changed it out and refilled the system. It took several hours to fill, is that normal? Anyways it took it and worked all last summer but I could see a very small leak where it was bubbling up around the new condenser. I believe I fixed the leak but now I am trying to fill the system again. I waited several hours, and nothing is going in. It has two adjustment screws, one on the high side and one on the low side, at the end of the refill spot. I've turned them all the way in and all the way out. Anyways I'm connected to the bottom hose. Does anyone know if this might be the high side? Maybe it just got lucky and accepted it last year. I had the jeep on and the air on high. Someone help?

[AlohaBra]

Originally Posted by jinx10000

I changed my air conditioner over to R-134a last summer. I had a wreck so I had to buy a new condenser. I changed it out and refilled the system. It took several hours to fill, is that normal? Anyways it took it and worked all last summer but I could see a very small leak where it was bubbling up around the new condenser. I believe I fixed the leak but now I am trying to fill the system again. I waited several hours, and nothing is going in. It has two adjustment screws, one on the high side and one on the low side, at the end of the refill spot. I've turned them all the way in and all the way out. Anyways I'm connected to the bottom hose. Does anyone know if this might be the high side? Maybe it just got lucky and accepted it last year. I had the jeep on and the air on high. Someone help?

LOw side hose is fatter....Hi side is thinner (High pressure is more powerful). Always charge to the low side only...the high pressure exceeding 225 psi can blow your can apart!

both screws should be out (service valves are only for compressor service). Get a book on AC. The compressor must be running to charge...the low side is the "suction" side and will draw in the refrigerent. Use a kit with a gage marked in 0-100 psi (low), do not connect to high side. Professionally they have two gage, one for low and one for high for more useful diagnostic information. Charge to 30-34 psi. Do not overcharge.

If your compressor doesn't come on. you have other problems.

[jinx10000]

Is there a way to force the compressor to come on. Last year it took couple of hours to force feed a can of 134 to it before the compressor would come on. Then it sucked the second can up pretty quickly. I am 99.9 percent sure it is not a problem with the compressor.

[GregA]

Jumper power directly to the compressor?

[SteveB05]

Actually, jumper the low side cut out switch.

[jinx10000]

There is only one wire going into the compressor that I can see. I jumped it and filled up the freon and it got fairly cold. However, when I plugged the connector back together the compressor will not kick on on its own. Any ideas? Also what should the glass eye look like when it is full and running? Full and shut off?

[jinx10000]

Ok guys I found out that two fuses on my fuse panel under the hood were bad. I changed both of them and now the air conditioner works. Thank you guys for the help. I never would have figured everything out otherwise.