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The low side pressure port for the 1999 Monte Carlo should be on a pipe against the firewall. It is just to the left of the Dipstick.
Under the air filter box. You'll have to remove the box to get at it.
Should be located down by the battery its kind of tight spot is there a diagram or picture of the port?
Usually toward the front of engine - smaller hose gets hot when functioning
connect a Freon gauge and Freon tank to the low side ac port. After starting the engine and putting ac on high, open the Freon valve. Watch the gauge until the Freon is full.
There is a screw adjustment in the vacuum modulator port
Where is the low side AC port on a 2001 Monte CarloIt is located near the firewall around the center line of the car. It is horizontal not vertical. The high side port is on the drivers side near the front of the vehicle. It is vertical.
where is the ac recharge port on a 93 ford explorer located?
under washer fluid contaner , look under contaners water &elect. connections
The black or silver can is the accumulator/drier, located near the firewall on the pass anger side. It has two AC hoses connected to it and a low side recharge port with a dust cap on it. Remove the dust cap (if it is still present) and connect your recharge kit to the port. When done replace the cap.
Freon is added in the low pressure port of the ac system. It is under the hood close to the ac drier.
Its below the air filter housing. You may have to remove the housing to get to them. I did because the hose wasn't long enough. Anyways there will be two ports close by. Its the smaller one that is lower down. The charger will only fit on the smaller one anyway.