Land Rover Repair: eas, valve body, air suspension

Question
hi i have had my rr 1996 hse for 6mths no problems, i was driving and back right started getting lower after 1 min eas slow 35mph came up any way had it reset then did it again next day, back right drops, read ecu says front left valve stuck closed, i have had ne valve 4 new springs compressor and lines checked, had reset 1 day later did again back right drops down then goes to hard fault reads front let valve stuck closed? any ideals im going crazy and i have 24" wheels when it drops to bump stops this is resting on tyres and has made alot of mess, please help thanks

Answer
You've got a leak somewhere - line, bag, valve body.  Or the driver module could be bad.  Or several parts.  Those old air suspension systems are very frustrating.  That's why most people convert to coil springs.

Try spraying the lines and fittings with soapy water and look for bubbles