94 Saturn sedan A/C not working

[mfh11]

Greetings all, I tried to use the A/C on my recently acquired
94 sedan. When I turn the A/C on and engage the A/C switch
the blower blows, the compressor clutch engages, the cooling fan comes on but the air never cools. I checked the system pressure and it is right at the yellow position (I think around 40 psi on the low side). I did not want to add additional freon 134 for fear of overcharging. Anybody have any advice or possible checks.

Thanks,
Mario

[reekor]

http://www.youtube.com/watch?v=Ij-QP3X_a48

Originally Posted by mfh11

Greetings all, I tried to use the A/C on my recently acquired
94 sedan. When I turn the A/C on and engage the A/C switch
the blower blows, the compressor clutch engages, the cooling fan comes on but the air never cools. I checked the system pressure and it is right at the yellow position (I think around 40 psi on the low side). I did not want to add additional freon 134 for fear of overcharging. Anybody have any advice or possible checks.

Thanks,
Mario

[mfh11]

reekor, I'm not really sure what the purpose of your post was suppose to be? In general 99% percent of the car guys out there know that all cars made after 1994 with A/C require "R134A" most people refer to "Freon" as as the refrigerant to be added to the A/C system. Unless I added a special adapter to my A/C system, I could not add Freon-R12, R22, or any other refrigerant to the system, trade name or not. I really do not think there was any confusion in my post about the type of refrigerant i was trying to add or use.

[reekor]

That is the problem 99% percent of the guys out there that play around with their A/C systems at home have no idea of what they are doing. Don't get me wrong anyone feeling up to the task should try their own repairs after taking the time to get educated and most do not.

The post is to clear up Freon confusion . Most of these people use the handy low side 134a charge hoses from Wal-mart that will allow you to connect a can of r22, r12 and r134a to the tap.

Let me point out a few holes in your post.

At what ambient temperature is your system at around 40 psi on the low side? 40psi on a 70 degree day will more then double on a 100 degree day. Is this with the compressor clutch engaged? Low side numbers mean very little without high side numbers to go with them. You can have a lot of compressor blow by or a plugged orifice tube causing your problem. You can also have a blend door problem.

Originally Posted by mfh11

reekor, I'm not really sure what the purpose of your post was suppose to be? In general 99% percent of the car guys out there know that all cars made after 1994 with A/C require "R134A" most people refer to "Freon" as as the refrigerant to be added to the A/C system. Unless I added a special adapter to my A/C system, I could not add Freon-R12, R22, or any other refrigerant to the system, trade name or not. I really do not think there was any confusion in my post about the type of refrigerant i was trying to add or use.

[RC1488]

More than likely its the compressor thats bad. It may engage but since its almost 14 years old...id say thats the issue. I would get the a/c drained properly, get a new compresor in (you can do that yourself) and then have it recharged properly.