Hello all. My '00 Disco 2 has been running great, but the past few days I have an intermittent amber ACE light that seems to come and go randomly. First started last week, backed out of the driveway, and the truck did a bit of a "dance" like the '63 Impala on hydraulics, then stopped and the ACE light came on. Weird. Shut off the engine, cycled the key off then restarted. No light, no movements. Repeated the "rock and roll" while turning left over a few bumps, then again the ACE light, amber. Drove to my destination, shut off and came back after about an hour and restarted to go home. No lights. I know that the ACE amber light indicates that the system is locked in place, and of course I can really tell when it is. Since that time, it has been off and on randomly, no pattern. My ACE system is in great shape, no leaks, new pump, new valve block from https://www.designdevelopmenteng.co....ded-p389433934, everything works great!

I have a Nanocom and got two fault code readings. Before I start throwing parts at the problem, anyone have any ideas or guidance? Ive only used the Nanocom for 3 amigos problems a while ago, which I fixed, so I haven't used it for ACE until now.

Let me know and thanks!

 

Well not familiar with the ACE system details but looks to me like a bad pressure sensor (or maybe pump) and an issue with the direction control valve. My guess is both might be electrical in nature like low voltage or bad grounds. Have you reviewed the Rave and done a search on here? ACE trucks are pretty rare, even rarer to still have all the hardware. There is probably a way to check the pressure for that fault to confirm it really is bad. Same with the direction valve, probably internal switches you can test.

 

If the ace filter at the block gets dirty you can have issues.