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PAG 46 system capacity 2001 T&C front and rear AC

miwitte on Sat October 22, 2011 11:21 AM User is offlineView users profile

Year: 2001
Make: Chrysler
Model: Town and country
Country of Origin: United States

I am replacing compressor, front and rear expansion valves, accumulator and flushing entire system with DuraFlush2. Since it will be empty I need to know exact amount of PAG 46 oil to put in. I will also drain the compressor so i know I am accurate to the amount. I dont have a factory manual, so if someone could look this up i would greatly appreciate it. Doing this today and tommrow.

Thanks in advance!!

TRB on Sat October 22, 2011 5:13 PM User is offlineView users profile

Check the Napa lisitngs.

http://www.autoacforum.com/messageview.cfm?catid=20&threadid=15701

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miwitte on Sat October 22, 2011 8:39 PM User is offlineView users profile

awesome thank you so much!!

I flushed everything out today with duraflush made one hell of a mess there was a lot of leak detector in it! That rear expansion valve was quite a pain to get to and flush the back evaporator and lines but its done and back together. I just have to put the accumulator in and compressor and pull a vacuum and hope for no leaks.

miwitte on Tue October 25, 2011 9:13 AM User is offlineView users profile

I have everything buttoned up and pulled a 30" vacuum for a couple of hours. It held 29" overnight so I put some freon in to check for any other leks. Ran it for a while and no visable leak using the black light(I put UV dye in it) Everything looks real good, but I have a couple of questions;

The cans of refrigerant said net weight 12 OZ. I have no way of weighing the cans so I am thinking that 4 cans are 48OZ, full charge is 46. The cans are very light, but I think maybe i may be a couple OZ low on the charge
In the alldata for the vehicle they have a charge determination chart that shows under and over charge as well as optimal. They use thermocouple temp right by the high pressure pressure gauge(liquid side). Using this chart I am getting 100 degrees 150PSI, 120 at 200 PSI and 140 at 250PSI(covering condensor to raise high side. Optimal is [email protected], [email protected] and [email protected] This was also at 85F yesterday it was only 75F. Looks like I am under. SHould I go buy a cheapie scale and weigh a full and empty can?

Other than that looks real good I spent the time to take everything apart and get a real good flush of the system and replace the compressor, expansion valves, accumulator.

mk378 on Wed October 26, 2011 12:47 PM User is offline

In theory, you'd leave about 1/4 ounce behind in a 12 oz can, with a typical charging procedure of using the car's compressor to pull it out until the can contains only gas at 30 psi. In practice of course it's likely to be more than that. I would hope the manufacturer can be trusted to put very close to 12 oz in a full can.

miwitte on Wed October 26, 2011 4:56 PM User is offlineView users profile

So 4 cans should put me at Approx 46-47 OZ and the spec for the vehicle is 46. I need to drive it around to see if it gets colder I have always noticed that most AC dont get super cold until you drive the car and get the engine RPM's up

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