I just did quite a few repairs on my 96 4.0, did all the work myself:
New Rear airspring bellow, new EAS pump, re oringed the EAS valve block,
New Trans and Oil cooler lines, New pAss fan motor, new dash bulbs, new fuse box, new rear hatch struts, changed all fluids, new cd player, replaced Heater orings,
The local independant did a reset on the EAS for me and said I should convert to springs as well...I just like the EAS...Wife is a realtor and needs it to lower for the olderly clients she has.
The closest dealer is 300 miles away, so for me to go there is a dy or two off and a drive up there to get gouged...Tried a few things on my own and all went well, So I am doing everthing I can to save Money
see if you can get a report from them as to what is actually wrong with the EAS..there are parts available for repairs..like O-Rings, I spent 20.00 on new rings and Dealer wanted to replace valve block for 1,500.00, wanted close to 400.00 for a new rear airspring, I bought a below only for 98 with lifetime warranty
theres alot you can do yourself and save alot of money
www.rangerovers.net has alot of repair write ups and how to's, lists of parts suppliers and there are lists like this one that has many subscribers that will do what they can to help you out
Rover4_0
