2001 LS AC Low Pressure Switch Location

[LSTony]

Where the heck is this thing at, trying to figure out why my ac clutch isnt engaging. Checked fuses and other things and am trying to put a charge into the system but the dang thing just wont kick on....

NVM, finally found the darn thing. Unplugging it allowed the clutch to engage and take a charge. After plugging it back in the clutch continued to operate.

 

[joegr]

Where the heck is this thing at, trying to figure out why my ac clutch isnt engaging. Checked fuses and other things and am trying to put a charge into the system but the dang thing just wont kick on....

NVM, finally found the darn thing. Unplugging it allowed the clutch to engage and take a charge. After plugging it back in the clutch continued to operate.

Weird, there is no low side switch on the gen II, only a high side pressure sensor. (The gen II high side pressure sensor also prevents the compressor from starting if the equalized system pressure is too low.)

Just connecting a charge can and opening the valve should have brought the pressure up enough after a bit to allow the compressor to come on. Running it dry like that probably shortened its like some.

 

[LSTony]

Weird, there is no low side switch on the gen II, only a high side pressure sensor. (The gen II high side pressure sensor also prevents the compressor from starting if the equalized system pressure is too low.)

Just connecting a charge can and opening the valve should have brought the pressure up enough after a bit to allow the compressor to come on. Running it dry like that probably shortened its like some.

Oh I did connect the can and it was reading pressure in the system, it just wouldn't engage until I disconnected the switch which was on a line just to the left and below the airbox.

 

[joegr]

Oh I did connect the can and it was reading pressure in the system, it just wouldn't engage until I disconnected the switch which was on a line just to the left and below the airbox.

Okay, that makes more sense. It was the high side pressure sensor that you disconnected. Probably the gen I doesn't have a low side switch either. Note that disconnecting a low side switch would prevent the compressor from running - you would have to jumper it.