As title the car is lowering overnight I haven't noticed this as I usually leave in acces, I replaced all air struts and compressor recently I have checked all pipe work and there are no leaks in what I have replaced or any other areas I can find, the car lowered on all four corners evenly and on start up in the morning the car won't rise to normal height straight away without the "suspension raising slowly" message if I leave it for a min it's ok and rises ok, but the compressor will run for around 3-4 mins on initial start up obviously to re fill the reservoir etc, I've read about the front valves etc can these be cleaned and refurbished or would it be better to replace, I have noticed that the compressor kicks in quite a lot and the ride has got worse recently, can the valves be tested in anyway either with iid tool or another way.Range Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
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19th Oct 2016 1:05 pm
z4cAtS
Member Since: 05 May 2011
Location: M4 J13
Posts: 137
Are you able to get an IID or similar to monitor the gallery pressure?
When mine was dropping, I noticed that the pressure was cycling up to 500+ when driving rather than holding steady at 330 ish now.
I replaced my suspension valves - new at front, salvage middle & rear and it stopped the problem.
A good clean will probably help as a cheaper option.
The valve is operated by a small plunger with a rubber button that sits inside the outer tube that gets moved operated by the solenoid and spring.
This can get bead powder in it that stops a complete seal.
There are a couple of videos on YouTube that show the process.(Remap, EGRs Blanked,Silicon I/C hose) from BAS, (Torque Convertor, Compressor, FL Wishbones, Alternator) by WD, Belts by Newbury4x4, Megaflush+extra cooler by GRGB, Diff+Transfer oils, ARB Bushes, Fuel filter, Fixed Towbar, Remote FBH.
I have my own iid so can check the pressures but will look at the videos on the valves I was hoping that the valves can be checked via the iid toolRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
19th Oct 2016 7:16 pm
z4cAtS
Member Since: 05 May 2011
Location: M4 J13
Posts: 137
The valves just show as open or closed, it can't detect anything more than that.
Watch the gallery pressure as you are driving, mine cycled from 200 to 500 repeatedly. Once it got to a threshold the exhaust valve would open and it would repeat.
Doesn't do it now I have clean valves.
I expect it was air leaking back out of the valve, it wouldn't take much to pressurise the just the pipework as the tank valve was staying closed.(Remap, EGRs Blanked,Silicon I/C hose) from BAS, (Torque Convertor, Compressor, FL Wishbones, Alternator) by WD, Belts by Newbury4x4, Megaflush+extra cooler by GRGB, Diff+Transfer oils, ARB Bushes, Fuel filter, Fixed Towbar, Remote FBH.
Finally got the chance to test with my iid to on the way back from Llandudno over the mountains to my Gaff in North Wales I set live values firstly to gallery pressure and front and reR crossover valves, neither of the valves showed as opening once and the gallery pressure stayed firm at 108Kpa and the compressor relay didn't open once on the 20min drive through the mountains, when I got to the Gaff I lowered to access height and the gallery pressure went to 192Kpa then when I raised the car the compressor kicked in and it went upto 1500Kpa the compressor was running at this point, I then raised and lowered to normal height and once the compressor cut out the pressure levelled to 600Kpa.
I'm unsure what to do next as the pressure was constant does this rule out the front valve any help is gratefully receivedRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
Pulled the fuses for air suspension last night and the front lowered both sides by 40mm from 680 down to 640, the rear only dropped from 690. Down to 685 but it was parked on my drive on a slope, would this indicate front crossover valve problemsRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
anyone able to confirm these pressures for meRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
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