AC Question about Adding R-134

[Ron Duckworth]

Hi all!



Got an AC question.



Since I just got the ST, I got a can of the AC Boost, 20oz, contained 12oz R-134, 2oz oil, some stop leak and some O-ring conditioner stuff.



I put the whole can in it yesterday while on lunch. The system took the whole can in about 1 minute. The AC cools fine except when sitting sitting in traffic, then it gets luke warm. Here's my question. How much R-134 should I put in it? Should I keep adding it until it can't hold anymore? Cause I swear the system can take more after the 20oz can.



Thanks for any help,



Ron

 

[EddieS'04]

You need a kit that Has a gauge, so you dont overcharge. You can get your pressures to high and cause damage. Their should be a sticker under the hood, telling you the charge weight...

 

[Richard L]

Fast Eddie is correct. There are kits with gauges to tell when you are at the recommended pressure.



Keep in mind that if the refrigerant leaked out, air leaked in and moisture in the AC can cause you problems later. At least you are smart enough to get the cans with the leak-stop and compressor oil, although most leak-stops don't work very well for very long.



...Rich

 

[Wes Davis]

Yeh get the full kit with the gauge and complete instructions. It will tell you what the pressure should be. Go for the highest recommended pressure. Keep in mind low pressure is okay probably a leak just keep filling with r134 only (no additives) after your first can of r134, oil and stop leak. Put in another can with additives once a year if you dont get a permanent fix. Too much oil and stop leak and you have more problems. If you have way high pressure then you got a serious problem only for a mechanic.

 

[Mike Wilson]

If you add too much oil and stop leak, you can "stress" your system. Also, to do

a proper a/c system service/charge after a leak, you need to do a "pull-down vacuum"

with a vacuum machine, after the leaks are fixed, to evacuate all of the moisture

and air from the system to be able to do a proper charge. There should be a

vacuum in the system to take all of the new refrigerant properly, as no ambient

air or moisture should be in the system for it to properly charge. As RichardL said,

in my words, you may be throwing good money after bad by using additives, and

adding expense later down the road, especially if you planned on keeping your

'Trac...Hope this helps...