The 3.8 was built from the 1960s into the 2000s
The location of the Refrigerant fittings will vary by Brand, Model, Year and trim level.
The low pressure Freon port on a 2005 Subaru Outback is located on the center of the engine compartment, in front of the engine block. It has a yellow cap.
The low pressure tap or fitting is located on the compressor underneath the car drivers side. It is the larger of the 2 metal pipes.
Quick release fitting located on the low pressure side (Larger hose from compressor)
on 2000 Malibu it is between firewall and engine on passenger side about a foot down it is marked with an "L".
The Freon low pressure port is located on the passenger side of the engine near the back. It is made into an aluminum pipe connected to the ac hoses.
Always to the low pressure side. The low pressure side fitting is normally near the dryer ( large silver canister).
Same as any other car...attach fill hose fitting to the low pressure side of the system (it won't fit on the high pressure side fitting) and open the fill valve.
If you are talking about the low pressure side recharge valve for the A/C system it is sort of low along side of the engine next to the radiator. It will be a fitting attached to a steel line that has a plastic cap on it that must be removed in order to put freon into the A/C system. It is called the low pressure side because it means it is on the suction side of the A/C compreesor (there fore low pressure) you never add freon to the high pressure (discharge side) of the system. This recharging is supposed to be done by service people with the correct knowledge and the equipment to prevent leakage of freon( one of the ozon depleating gases) to the atmosphere.
It uses R 134 not Freon (R12) and it goes in the low pressure (return) side, the only fitting the new 'kit' to recharge will accept. You can't put it on the high pressure line the fitting is different, years ago when the fittings were the same people were blowing themselves up pumping the referigerant IN to the can
The refrigerant needs to be added on the low pressure side of the compressor. this is located under the front of the vehicle by the bottom of the radiator. the line has a fitting which should have a blue cap on it. that's where you add the freon.
I have a 1999 chevy lumina 3.1 engine and i need to know how much freon to put in.I just bought a pressure gauge and i don't know how much freon to put in. Thank you! Michael Hendrix
Go to an auto parts store and get a can of r134a freon and a related tube with a pressure gauge (you can by these as a set usually). Attach the tube that you purchased to the LOW pressure side of the system which will be located under the hood, just behind the hood latch...labeled "L" on the screw off protective cap. Attach the quick connect on the hose that you purchased to the LOW pressure fitting and follow the directions...