A/C sporadically inop
#1
![Default](https://landroverforums.com/forum/images/icons/icon1.gif)
Ok, so today is the first hot day that I have driven the Disco. Well, the A/C didn't want to work. I charged the system up when I bought the truck 2 months ago, and I assumed that the refrig. had leaked out. I put some manifold gauges on it and I was suprised to see that I had 125 psi. I checked for power at the compressor, no power but I have a good ground. I checked for power at the pressure switch and I had power on both terminals. I couldn't find a wiring diagram (the rave manual doesn't contain them and that makes it a little useless) so I started to remove the control head to check for power there. While I was removing it, the electric fans kicked on. I still had the pressure switch unplugged and now I only had power on one terminal. When the pressure switch was plugged in, the a/c kicked on. My high side started climbing and when I revved the engine, the low side dropped to 32 psi (right where it should be). I turned the a/c switch off and back on. No a/c. If I firmly tap on the a/c control head I can switch the a/c on and off. Is this a control unit? I thought this was a mechanical a/c system. I really NEED a wiring diagram. I am sure that there are coolant temp inputs, engine speed inputs, etc. The light in the compressor switch (in the a/c control head) does not illuminate, even when the system is working. I think it is just burnt out, but it may be a sign of something else
Thread
Thread Starter
Forum
Replies
Last Post
Shryan
Discovery II
10
06-27-2008 08:33 PM
sickrangerover
General Range Rover Discussion - Archived
10
02-11-2007 11:44 AM
jaybe_2
General Range Rover Discussion - Archived
3
08-02-2006 11:14 PM