- Posts
- 16,482
Axle Eq is Left to Right not front to back IIRC
Air suspension problems.
- Thread starter Grrrrrr
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Grrrrrr
Technician, Bodgit & Scarper Ltd
- Posts
- 19,897
- Location
- Buckinghamshire, UK. ('95 DT)
Ah, probably not axle equalisation then.
Datatek's suggestion of a dodgy connection is good but it still wouldn't run from the Nanocom with dodgy power. However, guess it could be a bad signal. Odd that the ride heights showing on the Nanocom seem to reflect reality though. I guess that means the correct signal is getting to the EAS computer.
I'm sure it'll be something stupidly simple. Just had a look out the window and suspension isn't sagging so if it is a leak it is damn slow.
Datatek's suggestion of a dodgy connection is good but it still wouldn't run from the Nanocom with dodgy power. However, guess it could be a bad signal. Odd that the ride heights showing on the Nanocom seem to reflect reality though. I guess that means the correct signal is getting to the EAS computer.
I'm sure it'll be something stupidly simple. Just had a look out the window and suspension isn't sagging so if it is a leak it is damn slow.
- Posts
- 58,170
- Location
- Preston Lancs.
Yes correct. When vehicle speed drops below 1 mph front valves open to equalise pressure across front axle. If with compressor running rear comes up but front does not move with both front valves and inlet open it can only be lack of air pressure. Can't be a lot else to be honest. Inlet valve open precludes equalisation mode. Normal operation from say access when standard is selected would be, rears up then fronts, then rears then fronts to level car. If the rears are rising but fronts don't with valves open it can only be lack of pressure. It basically means the sensors are talking to the ECU and the ECU is activating the driver pack. No air no lifty. As Keith said earlier bad connections on plugs under valve block bad signal from pressure switch probably.
- Posts
- 58,170
- Location
- Preston Lancs.
Is the compressor blowing you finger off the outlet? Have you checked for diaphragm leak with compressor running? Clean the plugs in the valve block box, sounds like you have a bad connection to pressure switch. The two yellow wires service that. The plug under the valve block is favorite to be dicky. A bit of contact cleaner and slide it in and out a few times. See what you get.
Last edited:
Grrrrrr
Technician, Bodgit & Scarper Ltd
- Posts
- 19,897
- Location
- Buckinghamshire, UK. ('95 DT)
OK. Thanks Wammers.
Yes, after I reassembled the compressor it blew my finger off the outlet. Suction on inlet.
The Nanocom shows both front valves shut. I tried to force them open with the Nanocom but nothing seemed to happen. After a lot more fiddling with the Nanocom, switching between screens the front suddenly shot up and the back down and then it seemed to equalise so bad connection of some sorts sounds right.
Dark now (and wet) but I'll try taking the valve block out and search for 2 yellow wires underneath.
Not checked for diaphram leak yet. I'll dig out your How To and do that at the same time. Cool. Got a way forward to check!
Cheers,
J
Now, beer ...
Yes, after I reassembled the compressor it blew my finger off the outlet. Suction on inlet.
The Nanocom shows both front valves shut. I tried to force them open with the Nanocom but nothing seemed to happen. After a lot more fiddling with the Nanocom, switching between screens the front suddenly shot up and the back down and then it seemed to equalise so bad connection of some sorts sounds right.
Dark now (and wet) but I'll try taking the valve block out and search for 2 yellow wires underneath.
Not checked for diaphram leak yet. I'll dig out your How To and do that at the same time. Cool. Got a way forward to check!
Cheers,
J
Now, beer ...
- Posts
- 58,170
- Location
- Preston Lancs.
Check the plugs then get back. Try to get compressor working normally for a start. All may sort itself if you do.
TAKdriver
Active Member
- Posts
- 621
- Location
- Beside a field in Midlothian
Could one front dodgy height sensor be a possibility ?
( Not that I know anything !!) Just trying to help
Grrrrrr
Technician, Bodgit & Scarper Ltd
- Posts
- 19,897
- Location
- Buckinghamshire, UK. ('95 DT)
Worth a thought. The sensors seem to be working OK as what they report int he Nanocom seems to match what is happening outside, as it were. Worth bearing in mind though.
TAKdriver
Active Member
- Posts
- 621
- Location
- Beside a field in Midlothian
Worth resetting heights and start again from the beginning : might show up a sensor which has been over extended during the probs.
Datatek
Well-Known Member
- Posts
- 46,014
- Location
- Near Poitiers SW France
It's unlikely to be a height sensor, the Nano screen shots show that the target height has been exceeded at the rear and not attained at the front, the sensors are producing readings that correspond to the actual vehicle height. I would still bet on it being the connectors in the EAS box or the driver pack. It may well be that the compressor is not running because of the sensor readings being all over the place.
TAKdriver
Active Member
- Posts
- 621
- Location
- Beside a field in Midlothian
I don't know the Nano but presumably it has a function for capturing the stored/default heights ? Is there not a case for going back to basics, capture/install/rerun/compressor check ?
Datatek
Well-Known Member
- Posts
- 46,014
- Location
- Near Poitiers SW France
Look at his screen shots, it shows the stored target heights and the actual heights attained. Can't get much more basic than that.
Grrrrrr
Technician, Bodgit & Scarper Ltd
- Posts
- 19,897
- Location
- Buckinghamshire, UK. ('95 DT)
I'll pull the lot apart at the weekend ... if it is dry!
