If by "low side" u mean the port where u put FREON in : with the hood up, as u face the car looking at the engine, locate the Power Steering filler cap. If u look directly down the engine side (not fender side) of the Power Steering Reservoir into the gap/space you'll see a small round cap & my '01 s80 has yellow numbers on it. Better have SMALL hands its tight. If you're putting freon in, NAPA sells a SILVER can of freon - its $31.00, but it comes with a gauge attached to the filler hose/fitting so u can read freon status AND it fits the $3.99 cans of freon NAPA sells. If u buy another brand of freon, then u have to buy their freon cans in the future at 2-3 times NAPA price. If ur putting freon in u have a leak & u'll be using more in the future. The other A/C port is located less than a foot to the left of the engine hood catch,, u'll see a small round-ish A/C port knob. I don't know what its for.
There is no high side service port only a low side.
Its in the front of the engine on the side of the condenser. You can find a drawing of where it is located on the website link below.
The AC low side service port on a 1999 Chevy Astro van is located next to the firewall. It is the port that is closest to the evaporator.
Low side service port is against the firewall just underneath the alternator. It has a Blue cap on it.
In the ac system through the low side service port.In the ac system through the low side service port.
Follow the larger hose from the a/c compressor
This is actually a trick question. There is NO High Pressure Port on the Volvo 850 Turbo. Service is done by connecting to the Low Pressure Side and using this access to both Evacuate and Service. Chrysler for a few years did not use a High Pressure Port and required connecting a Scan Tool to the OBDII Connector and taking readings this way but Volvo does not even offer this option. Todd
The EVAP Service port is on the firewall on the passenger side, right next to the low side service port for the A/C.
The low side service port can be found on top of the air conditioner compressor. The low side service port will have a blue top.
The low side service port on your 1993 Mitsubishi Eclipse can be found on top of the air conditioner compressor. The low side service port will be labeled as the low pressure port.
The 1997 Volvo 850 low pressure port is located on the air conditioning compressor. The low pressure port will be on the right hand side of the compressor.
The smaller port is the low side.