Engages and disengages the compressor clutch as needed.
The ac pressure cycling switch is designed to engage or dissengage the clutch to keep the proper pressure in the system.
The 1997 Chevy Lumina 3.1 liter low pressure air conditioning cycling switch can be found on the air conditioning compressor. The switch will be on the top of the compressor.
The low pressure cycling switch is on the low pressure line coming from the compressor. Most of the time, it will be located on the reciever/dryer. It will have two wires coming from it. The low pressure line is the bigger line of the two.
It is on the acumulator.
Possibly the pressure cycling switch.
On the top of the drier at the passenger side firewall Wrong the pressure switch is on the ac line under te air cleaner assl. There OS no drier on the fire wall it is before the switch .
It is under the hood on the accumulator.
The pressure switch could be faulty, the pressure tank could be waterlogged, the pump intake could be at static water level. Call a well technician.
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 relays are on the engine side firewall. The compressor relay signal comes from the main computer through the pressure cycling switch or switches.
Yes you do, do not remove the switch with freeon in the system. must drain system down. It depends on the vehicle. Many (if not most) of the "clutch cycling" switches are actually simple pressure sensors and there is a schrader valve which will hold the pressure while you change the valve. A little more research is appropriate for YOUR vehicle before you decide what to do.
Its on the a/c accumulator located on the drivers side better seen from under the vehicle.......