Engine Size: 2.2
Refrigerant Type: 134a
Ambient Temp: 85
Pressure Low: 35
Pressure High: ?
Country of Origin: United States
my blower was blowing warm yesterday, seemed cold last week.
a can of 134 has been added each of last two years.
my system seemed to be normal except for warm air and lack of compressor cycling-i guess the low pressure switch worked.
so, i added a can of interdynamics with "system safe leak sealer"on the can.
my cheap low pressure gauge went from 0 to 35 psi, but air is now only cool, not cold like last week and the compressor still does not cycle.
i am schooling myself in anticipation of visiting a couple aircon shops today and have learned a lot about ac systems, especially from this site.
ackits.com is very informative.
my primary concerns right now are:
why does my compressor not cycle now?
have i harmed my system by foolishly adding the can of 134a having the "leak sealer"? is their enough in 1 can to harm my system?
what is the practical step to be taken now?
your comments are appreciated.
Agree sealer is bad. Now if it is the type that just swells the o-rings your better off compared to the type that hardends.
If your low side was zero, more than likely all of your refrigerant leaked out and you have air in your system, going from 0-35 psi with one can verifies that. Too bad you couldn't also measure your high side. Leaks never seem to get better, just worse TXV blocks on this vehicle are common sore spots. Now you have all the junk in your system. Should of come here first.
got call from mechanic. he said system was overcharged. that is a surprise as my gauge said 35 psi low side. perhaps, when i thought the starting psi was zero, the system had not run long enough to stabilize.
oh, the interdynamics can i added was r134a with some sealer in it, was not a can of sealer only.
i did not have time to inquire of their static gauge pressures or pressure after running a few minutes.
still no word as to why no cold air. guess they are still testing.
waiting on their call.
Find and fix your leak, then recharge the system properly.. As Nick said, you probably have air in the system, and air is not condensable..There are no short cuts in AC repair.. Do it right and do it once.. Hope this helps..
PS: Hope that the sealer does not ruin your system now.. Will be much more expensive than adding a can every year...
Freedoms just another word for nothing left to lose
well, car is back and blowing cold.
as said, i had overcharged system and i never heard the compressor cycle at my house.
they vac'ed system, recharged and it worked.
later they did dye test, found 3 leaky seals, so replaced a condenser hose, vac'ed and charged it again.
their theory is the pressure switch stopped compressor upon freon loss and my adding 12 oz overcharged it
presumably triggering the safety switch again, as i never heard a clutch cycle before of after adding the 12 oz.
my system capacity is 23 oz. i never realized system would be this sensitive to charge amount.
this experience is likely last time i home charge the system without a full gauge set, esp if clutch is not cycling.
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