Location: Leonardtown, MD
Posts: 9,004
My VIN: 03572
Fittings for R12 and R22 are the same for high and low sides. It was the R134 that made different fittings. The reason was to reduce the amount of gas vented when the hoses were disconnected and attached. They also made them different sizes so as not to attach the wrong charge hose.
Posts: 70
My VIN: 10452
Club(s): (DOI)
I understand. So now I am sure. I attach the R12 fitting to the cap on the left side of the system.
Posts: 70
My VIN: 10452
Club(s): (DOI)
Ok, so I didnt end up recharging the system. When I attached the r12 adapter and hooked up the regulator with the can. I gotba regulator reading of 58PSI. Just at the blue meets yellow. I take that as it doesnt need a recharge. I dont understand why my ac is not blowing very cold. The ac belt is turning when the car is on. Any ideas?
Location: Austin MN
Posts: 580
My VIN: 03500
To show true pressure the compressor has to be running. And that is how you ad refrigerant it sucks it in. When running if my memory serves me it should be 30 to 35 psi.
Last edited by WHO1DMC; 07-15-2018 at 09:05 PM.
Posts: 4,764
My VIN: Banged your VIN'S mom
Was the engine or AC system off when you connected your hose? I really think you need to heed my original advice, this is not a job for someone with limited knowledge on AC systems.Originally Posted by Felix_29
Posts: 70
My VIN: 10452
Club(s): (DOI)
The car was off when I hooked up the regulator.
Posts: 4,764
My VIN: Banged your VIN'S mom
Then you have no clue what the actual low pressure was.
Location: Rochester, NY
Posts: 2,405
My VIN: 01049
Take the car to an A/C shop. Seriously.
-Mike
My engine twists my frame.
1981 DeLorean, Carb LS4 swap completed
1999 Corvette, cam/headers/intake manifold, 400 rwhp
2005 Elise, stock
2016 Chevy Cruze
Posts: 70
My VIN: 10452
Club(s): (DOI)
Well it is obvious you guys do know more than I do about this. You guys obviously learned this a/c stuff somehow yourselves. How would you feel if someone said to you "Don't do this job yourself" or "take it an a/c shop. seriously". I'm not sure why you feel i'm not capable of learning what you know... I won't learn anything if I keep taking the car into a shop every time it needs something. I'm trying to be learn more about my car and be cautious at the same time. I think i'm doing the right thing by taking it slow and asking questions. I'm not totally green to this. I only lack experience. I thought that was the point of this forum. For owners to help owners. I do appreciate the help I have received on this thread.
Location: Leonardtown, MD
Posts: 9,004
My VIN: 03572
When charging the AC system, normally you connect a set of gauges to high an low pressure sides. Those gauges have a third hose that connects to the charging tank or vacuum compressor. The gauge set has two valves that open that third hose to the low and or high pressure side. So people are concerned if you open the wrong valve during your charging the charging tank could blow up and injure you.
When charging your system, the tank holding the refrigerant has gas drawn into the running AC system. That tank has liquid refrigerant and the system draws gas if the tank is held upright. That change of liquid to gas make the tank get very cold and the tank pressure drops. So with the small "tank" cans you normally put that can in hot water held upright so it continues to move the gas from the tank into the AC system.
So what do you have for a gauge charging hose system?
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