Member Since: 08 Jul 2015
Location: Sydney
Posts: 4
Air suspension average 24hr height loss 40mm+, next steps?
Hello
New here, recently bought a 2005 Disco 3 4.0l V6 Petrol as a weekend car to see a bit more of Australia. Already had heaps of fun in it and am very pleased overall. I've thrown a few $k at it in the last few months as I intend to keep it and have brought it back to almost mint mechanical condition.
The main job left now is the air suspension. I park in my underground garage in access mode so don't notice day to day, but when left somewhere tall enough I've been pulling f35 to disable the auto levelling and on average it drops 60mm on the front passenger side and 40mm on the other three corners.
Based on the posts I've read I'm thinking about servicing my valve blocks first, then reassess its height loss and maybe fit a pair of front struts. If that doesn't cure it I'll treat it to all four, but I was trying to make sure I wasn't spending money for the sake of it.
Does anyone have any thoughts or experiences of if I'm going about this the right way?
Thanks
Brodie
8th Jul 2015 1:27 pm
Barn1e D3 Decade
Member Since: 28 Aug 2006
Location: Mid-sussex
Posts: 2021
Is it worth trying to find a diagram of the air suspension. I dont know enough about self leveling when engine is turned off. Would one corner cause the others to adjust down to try to catch up until they reach a certain height at which they stop lowing whilst the leaky corner carries on?
Have you tried listening for an air leak from the front passenger corner or along the pipework back to the vale block? Soapy water on the pipe junctions may show a leak.2005, TDV6 S, Auto, 190k miles, owned from new, V8 Brake Upgrade, Nancom Evo, RLD protector, BAS EGR blanking & Remap, separate ATF cooler, changing all the fluids ahead of time.
8th Jul 2015 8:30 pm
Ginner
Member Since: 28 May 2014
Location: Cheshire
Posts: 189
Try the soloniod valves, the are prone to leaking? J
Last edited by Ginner on 11th Jul 2015 9:08 pm. Edited 1 time in total
8th Jul 2015 9:53 pm
kastone
Member Since: 29 Jul 2008
Location: Karlsruhe
Posts: 77
Remove Fuse 26 in the Engine Bay. Without power the EAS can't self leveling the Discovery which happens two hours after switching off the engine and every six hours afterwards. Then you will hopefully see which suspension unit has a leakage.
KlausKlaus Nahr - discovery3.de
Land Rover Discovery 3 TDV6 HSE
9th Jul 2015 6:18 pm
Brodeh
Member Since: 08 Jul 2015
Location: Sydney
Posts: 4
Thanks Guys. Sorry, I obviously wasn’t clear!
I've already removed the fuses and it’s not auto levelling.
It loses that amount of air on all four corners with the fuses removed. Within three days with no fuses all four corners are on the bump stops!
9th Jul 2015 11:42 pm
kastone
Member Since: 29 Jul 2008
Location: Karlsruhe
Posts: 77
F35P is the "Ignition On" Signal to the EAS ECU and this stops auto leveling when the Ignition is On. Removing the Fuse F35 would most likely result in Auto Levelling when the car is running (not sure if the ECU evaluates the CAN-Bus Messages too to stop auto levelling.)
To Stop Auto Levelling you have to unpower the EAS by removing Fuse 26E in the Engine Bay or disconnect the Battery or use e.g. IIDTool to disable the EAS ECU.
KlausKlaus Nahr - discovery3.de
Land Rover Discovery 3 TDV6 HSE
10th Jul 2015 9:19 am
kingrover
Member Since: 31 Jul 2014
Location: West Coast
Posts: 10
Was having similar "settling" overnight with mine. New front and rear valve blocks did the trick. Didn't even drop after sitting for over a week in the airport car park recently.
10th Jul 2015 3:57 pm
ostland
Member Since: 16 Jan 2009
Location: Capital!
Posts: 89
I also had similar issues, and upon replacing the front and rear valve blocks the symptom dissapeared. Was told that earlier MYs often have this issue. I would look at these first before focusing on the front passenger suspension.
13th Jul 2015 11:00 am
scooby driver
Member Since: 02 Jan 2011
Location: London
Posts: 145
Had a similar issue replaced front valve block but it turned out to be a split in the dryer on the compressor for some reason this appears to lower the car overnight - its not perfect now but its so much better and the D3 fart noise is back
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