Some FYI from EL & WM.

Good luck.
......

 

Thanks Collie
I just found a control unit I got long time ago when I had an ac problem. The unit is good but still now juice to the clutch. I have been reading the RAVE plenty and need more time I guess to trace the root of this problem. I'll post some updates. Im just checking how to check the wiring, HAHAHA! some situation here.

 

did you swap the relay with another? That could be it.

 

More info about the Denso A/C compressor and clutch removal...
http://ww2.justanswer.com/uploads/jo...622_clutch.pdf

 

Thats a great resource and thanks. I checked with the other disco with working A/C, that when its on and turned to the max, it will show voltage on the connector end. But, the other does not have power at all. MAVIS auto, said that the A/C compressor is shut and not working and I had to pay $800.00++ to fix it. I am sure that the compressor has nothing to do with the system not working at this point. The clutch worked when directly jumped to battery. Checked all fuses and relay and they all worked, switching with the working disco with A/C. My guess is also the switch on the dryer, but at the moment it could be any switch. I also got a gauge to test pressure in the system since it wont work if MAVIS fooled me by telling me they vacuum and recharge the system to full capacity but not.
I did some searching and probably I can find whats wrong. I'm waiting for a better tester I ordered online to check the actual electrical sockets for faults. If they all work then I can probably check all the sensors.
I now have an idea where to start and I'll try how far I can troubleshoot the system. So far, I got the auxiliary fan working again but not sure if its getting the right power too. I'll just invest in a good quality tester instead of paying MAVIS who is bull****ting me at the moment. Well, it will be a guess work and will be needing your inputs as I proceed next week.
Thank you

 

Is there a clutch repair kit for 2004 Land Rover Discovery II? Or the 2003 one works ?
Land Rover DISCOVERY AC Compressor Clutch REPAIR KIT 2001 2002 2003 A/C - AC Compressor Clutches | thechillman

*Edit*
Supposedly there is a kit at AutoZone for $20 Made by Santech A/C Comp Clutch Installation Kit #MT0985[/QUOTE]

 

Just enquiring if your issue was ever resolved??
I'm having the exact same issue.

 

I am resurrecting it because I am having the exact same issue and looking for what was the fix here if anyone knows?

2003 Discovery 2
134k miles

Issue: AC not blowing cold after a full professional recharge last fall.

Upon observation, I am not hearing the compressor kick in, nor do I see it spinning when "Econ" is off, on, nor in Auto mode either.

Tests so far:
1) I disconnected the two wire plug that leads to the front of the compresor.
2) I put a volt meter in the tail that comes from under the intake manifold area and reads no (very low, .02) voltage.
3) I hot wired the female part of the compressor plug straight to the battery and when I completed the circuit, the compressor started to run as it should.
4) I hooked up my can of 134a refrigerant to the low-side port and I am reading zero (nothing). Seems like maybe there is nothing in the system at all???
5) I already installed a new condenser cooling fan and new fuse. Im able to force output from my iLand OBD2 port and the fans spin properly.

So - Im curious if anyone has any thoughts here. Is my system refusing to kick in because maybe there is zero refrigerant? Would that be why I have no plausible signal being pushed from the AC control unit (see above #2)?

Thanks for any help.

 

Yep, you have a leak and no refrigerant in the system. Usually you can find it by finding the oily spot in the system. If not, you may have to charge it with dye and look for it with UV dye. Most common leak point is the AC compressor shaft seal.

 

Thanks for the suggestion. First time digging into an AC unit then for me - where is the "AC compressor shaft seal"? Is this a repair or replacement of the compressor completely?