Hello - I have a 2002 SE and the air conditioning has been out for the
last week. I put off buying any 134a until tonight. I am assuming
the low pressure port is on the line leading from the passenger side
dashboard to the front of the engine to the compressor. The valve cap
itself was marked "L", so I can only assume this was correct. At any
rate, to my dismay, when I pressed on the valve stem, it seemed to
dispense refrigerant freely and w/ good pressure.

So the air blows, but I get no cold air. Does this sound like a
condensor issue? Is this somethign you guys have experienced on this
year/model?

Thx,

Ben

Ben Miller wrote:
That's not a valid test. You can have still have pressure, but not
enough to keep the limit switch open. You need a guage to measure it.
Since you already have some R134, I'd put in 1/2 a can and see if the
compressor runs. If not, it's probably time to take it to a professional.

On Sep 11, 7:15 pm, JimV <jv9... (AT) yahoo (DOT) com> wrote:
Sorry - I forgot to mention one thing - when I put the cap of the 134
onto the valve of the low pressure port, it wouldn't work - nothing
would come out of the can. I took it off the valve and it worked
fine. So I guess I was thinking that there was sufficient back-
pressure to keep the can from emptying its contents into the line...

Low pressure really means lower pressure, but still, when working, it
should be between 30 and 40 psi, with the a/c off, it should be at
around 100 psi (if my memory does not fail me).

When transferring refrigerant from the can to the system, the pressure
switch may need to be by-passed, and the can should be with the bottom
up to dispense liquid refrigerant. Make sure you are using the proper
dispensing (hose/gauges/connector) as to prevent liquid refrigerant from
entering the system. Yes, you dispense liquid, but you do not want
liquid in the low pressure side.

Good luck!

Ben Miller wrote: