I have a couple of old cars that have leaks in the AC at the
compressor shaft. As you might guess, I have no money.
The cost of repair is more than the value of the car, so I'm just
adding a little R-134a a couple of times during the summer.
I've got a digital thermometer that I stick in the air vent and
add refrigerant until the temperature drops from 80 degrees to 52
degrees. At that point, I notice that adding more refrigerant
doesn'nt do much for lowering the vent temperature. Eventually, I see
that the condensation on the lines coming out of the evaporator begins
to frost over so I stop and disconnect at that point.
This has worked well for me but I thought I would ask if you might
know a better way. Like measuring the temperature of the compressor
low pressure line about 4 inches from where it enters the compressor.
[original post is likely clipped to save bandwidth]
On Tue, 03 Aug 2004 05:40:24 -0700, AC/DCdude17
Basically is the oil compatible. R-134 needs a very different oil. There
are some retrofit kits for R-12 systems that are legal for DIY if a EPA
certified tech evacuates the system of R-12.
Right except for the wrong answer on the last one.
The only "right" way is weigh in. Modulating the compressor clutch leads
to unstable pressures. EPA requires amount of refrigerant weight be
clearly labeled on all cars since 1994 and all retrofitted cars.
Personal home page - http://gogood.com
gerry misspelled in my email address to confuse robots
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.