Hello everyone.
I have a 1996 Grand Am with a 2.4l engine. It has quite some miles on (134,000mi).
Since the weather starts to get nicer (spring is finally back!), I checked my I checked my air condition and found out that it doesn't work anymore. The compressor is still pumping, but no cold air is being produced. So I checked the pressure on the low-pressure side -- it was at 25 psi (I found out that about 45 psi is normal). So I put a large can of H134a freon in it. During the fillup, the pressure gauge went up (while shaking the can), but went back down to 25 psi when I was done. The A/C still doesn't work. I did not see any puddles under my car, so I assume the freon is in the system, but where? If there was a leak somewhere, wouldn't the preasure be down to zero if the leak was large enough to make the whole can of freon disappear?
Any ideas what I could try next?
Thanks.
P.S. For future readers of this note, if you ever try to find the low-pressure access point of the A/C system of a Grand Am (at least the one built in 1996), it is easily accessible from under the car. It is the knob with a blue cap located on the compressor.