The 1999 Ford Ranger low pressure air conditioning valve can be found on the air conditioning compressor. The low pressure valve will be labeled as the low pressure port.
BEHIND THE COMPRESER
Your 1999 Oldsmobile air conditioning air compressor can be found on the left-hand side of the engine. You can fill the system with Freon through the low pressure port.
You can charge your 1999 Mercury air conditioning system from the low pressure port on the air conditioning compressor. Connect your Freon bottle to the low pressure port and release the Freon into the system.
This is for the air conditioning system
The system has pressure on it but the switch can be screwed off. A schrader valve prevents the loss of refrigerant. Install the new one after you have put some Air conditioning oil on the O ring seal.
the low side is located behind the engine by the fire wall to the passager side should have a green or ble cap on it
The Freon is added through the low side ac port. A pressure gauge is used to show when the system is full. Follow the Freon can directions closely.
A 1999 Ford Mustang has r134a in the air conditioning system
Air Conditioning Vacuum Pump.
Air conditioning system has a Freon capacity of five pounds. Most air conditioning recharge kits will tell you when the system is completely charged.
Find one in the manual, we cannot do diagrams