I'm not sure about the Land Rover A/C system, but lots of cars have a pressure sensor in the system that will stop the clutch from operating when pressure is low.

You can jump it to see if it works. Just unplug it and hook a ground to one side and 12v to the other side.

 

^what I/He said...

 

jump out the low pressure switch if the clutch engages you are low on gas. but where did the gas go?

 

Perfect, that is the name of the switch. Do you know exactly where this switch is located?

 

i dont have my truck with me but they are usually up near the evaporator section on the firewall

 

Looks like LR put it in front of drier check oposite the battery on the Condenser

 

Yes, this is where they are on my other cars. I tried to take a quick look before it got dark, but looks like I have to remove the front grill.

 

I believe this is the one mounted on the Drier. Will report back on the harness pins.

 

Ok guys. Finally got the bumper off.

3 scrivets on top, then you'll need to remove the panels under the headlight. Had to remove the inside fender panel on the drivers side to access screw. Once those two panels are removed, the grill will come off.

Found the switch and jumped it using a fork spade. Turned the engine on and hit the AC On button. Sure enough, the clutch then started spinning. I just let it run for a few seconds, but you can then feel the cold ac out the vents.

That was a relief as at least I know now the compressor is good. Now to get it over to my AC guy and have him check the R134 levels and put some dye and see if it is leaking.

 

Good one, looks like you are finally winning.