The 1988 Jeep Cherokee air conditioning low pressure port is located on the air conditioning compressor. The low pressure port will be on the right hand side of the compressor.
look right by the compressor and condenser
Jeep Grand Cherokee cooling system through the low port on the air conditioning compressor. Connect your Freon bottle to the port and discharge.
Low side.Low side.
Should be the larger hose coming from the compressor sorry, 1998 in line 6, there are 2 a/c ports on this jeep. one is on the small steel line the other is at the side of compressor with a cap on the port which has a ..H.. on the cap.
At passenger side of engine, around coolant overflow bottle. Piece of tubing, with pressure port sticking out. Usually has cover, with L marked on it.
It should be on the smaller diameter of the 2 lines. On a 97-98 it is right above the plastic coolant tank.
The low pressure ac port is on the passenger side of the vehicle. It is close to the firewall mounted on the low side aluminum line.
It is on the passenger side of the engine compartment right in front of the coolant reservoir. The shiny long refrigerant line has the port covered with a screw off cap.
both hi and low should be on top of the compressor (if the same as 88 4.0).....hope this helps, Mike
right on the back of the compressor. low side top, high side under it