Discovery 2 Ambient Air Pressure Update & a Rant!

Had to get these off my chest, oh, and some car stuff!
7.24 Air Pressure.
9.22 Nanocom.
16'06 Nanocom.

[@DoubleZeroGarage]

Thanks for the mention Derek, hope your back is easing off a bit

[@sleepycatpictures1176]

Cheers Nigel! Happy to say, I put my trousers on yesterday with out any help! And both socks.

[@DoubleZeroGarage]

@@sleepycatpictures1176 great progress, well done

[@SiCrewe]

Oooh, something just occured to me... While I was monkeying around with my fuel-pump I checked the relays under the bonnet and was surprised to find they are NOT standard relays. Honestly, I can't even remember what was different about them but it was significant enough that I got a mate to double check what I'd found and it seemed like the D2 relays aren't completely compatible with standard 4/5 pin ones. The D2 relays (on mine) are Ford badged so we borrowed a couple out of his Ford Fusion for comparison and, although they look identical, they DON'T function in exactly the same way. Course, we didn't do anything sensible like compare part numbers but it seems like if you replace a relay on a D2 with the minset that "a relay's just a relay innit?!" you might be in for trouble. If you've replaced the relay for the ACE, and not used a relay specifically intended for a D2, that might be causing your problem.

[@sleepycatpictures1176]

I checked, the relays are the same. Anyway I'll see if the code comes back after a drive. Not much info on the 'net related to D2's. Might be just a dodgy connection on a ECU somewhere. When I can move properly, I'll get under the dash!

[@SiCrewe]

The ACE fault code is kind of important. Coincidentally, as I just said in another comment, the real purpose of ACE is that it pressurises the ACE rams at road-speed to minimise body-roll but at low speed (such as when you're off-road) it depressurises them to maximise axle articulation. Without the speed signal the ACE doesn't know how fast the vehicle is travelling so it can't adjust the ACE. Must admit, I don't know whether the failsafe ACE setting is pressurised or depressurised. Kind of a silly question with a D2 but are you noticing a lot of body-roll in corners? With standard tyres, and ACE, a D2 SHOULD corner surprisingly well. If you're getting a lot of body-roll, the ACE is probably depressurised and you've, basically, got no ARBs. Honestly, though, I'd hope the failsafe setting would be for the ACE to be pressurised, cos that's mean the vehicle was always safe for road driving, even if the electrickery failed. Thinking about it a bit more, the fact that you don't have an ACE warning light on the dash probably means the ACE IS pressurised - safe for road driving. Your only problem is that if you decide to go off-roading the ACE won't depressurise to give you better axle articulation. Or, at worst, it might suddenly lose it's marbles in a fast corner and try and throw you off the side of the road, like my first D2 did. 🤨

[@sleepycatpictures1176]

Oh crap . . . Plenty of marbles missing myself . . . ! Don't really notice the cornering but now you have mentioned it. I'll check. Perhaps a fluid change and filter might help.

[@davidduffy4924]

Derek just had a problem with a leaking Ace pipe all sorted now biggest problem was getting to the pipe car is to complicated simpler is better😢

[@sleepycatpictures1176]

Yes, but ACE is great!

[@Toastmanpat]

I've recently had my ace leaking and swapped it for normal roll bars. Definitely not as good as ace but the difference I feel isn't miles apart.

[@sleepycatpictures1176]

@@Toastmanpat With one person in the vehicle there's not much difference, but with 6 or 7 in, then it really tells.

[@martinrothwell8966]

Eh up Derek, glass back and concrete do not mix, unless lots of ibuprofen available. Foxwell will communicate with all Land rovers from 300tdi up to 2016 models. Would you believe this after I gave you all my D2 spares, someone came up to me to see if i had a drivers door window regulator. Is that what you call life. If you get interested in videoing a different type of engines, working of coal and water, get in contact. Ps I would love to see and intro with you d2 driving towards the camera, then a outro of it driving away. I got to say your d2 td5 sounds brilliant. pps speed sensor fault might come back once you have driven it.

[@sleepycatpictures1176]

Hi Martin! That's another of life's irony's. You can keep an object for 20 years and not use it. The day after you get rid of it, you need it!!! Thinking of doing a driving video anyway . . . in between showers of course!

[@martinrothwell8966]

@@sleepycatpictures1176 Had a thought last night about speed sensor. It could be picking up signals from all 4 abs wheel sensors, the allerting you when one is out of calibration with the others. Check and graph live data from all four sensors on a run to see if one is out of sink. Nanocom should be able to do that.

[@martinrothwell8966]

@@sleepycatpictures1176 Another thought for speed sensor, Tyres with different depths of tread??

[@sleepycatpictures1176]

@@martinrothwell8966 Never thought of that. I was thinking more of a dodgy connection in a ECU somewhere. Good call though.

[@sleepycatpictures1176]

@@martinrothwell8966 Ooh, possibly. I can't imagine the system being that precise, but . . .! What do I know!