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The 1994 Oldsmobile air conditioning compressor control relay can be found on the firewall in the engine compartment. The relay will be on the passenger side of the firewall.
The air conditioning compressor is on the right side of the engine on the bottom.
You can find a diagram for replacing the air conditioning compressor on your 1994 Chevy 1500 pickup truck in a Chevy service manual. Many auto-parts stores will supply the diagram when you purchase the air conditioning compressor.
You can find the air conditioning ports on top of the air conditioning compressor. There will be a low pressure port and a high pressure port.
the compressor is on the passenger's side of the motor under the van.
The compressor is probably froze up.
above the a/c and heater housing, behind the glove box , right side dash
The 1994 Toyota uses are R-136 Freon. The air conditioning compressor Freon capacity is five pounds. The manufacturer recommends you never overfill the air conditioner compressor.
The 1994 Buick Century air conditioning low side port can be found on top of the air conditioning compressor. The low side port will be labeled as the low pressure port.
Passenger side wheel well. You have to take the wheel off, wheel well shroud, and to the right you will see the compressor.
It is either in or next to the fuse box under the hood.
Most likely, your air conditioning compressor is cooked or its pulley clutch has seized. Hopefully it was the pulley, because the compressor is not cheap.