The ever popular and versatile Land Rover Discovery 2 models could have either standard coil spring suspension or self levelling air suspension on the rear. The air suspension is an excellent system and gives superior handling and comfort and is particularly useful when towing.
However there are common problems with the air suspension system that can cause it to fail. As with anything, components do wear out with use and age. The air springs are made of rubber and can perish and leak as can the air lines. The compressors have moving parts that will inevitably wear out sooner or later. There are also sensors and electrical connector underneath the car that are subject to harsh conditions. These are all to be expected on any make of car.
Diagnosing and repairing air suspension faults can become expensive. Many owners opt to convert the rear air suspension to coil springs. This is an easy and relatively cheap conversion. JGS4x4 offer a complete Discovery 2 air to coil conversion kit with suitable coil springs and the associated hardware required to fit.
Fitting should take a couple of hours at the most and if you are a reasonable DIY mechanic you should find it easy enough. The only technical bit is having to tell the ECU that the suspension has been changed from air to coil suspension otherwise you will have a permanently illuminated warning light on the dashboard. This can only be done by using a specialist Land Rover diagnostic unit such as the Bearmach Hawkeye or by visiting a Land Rover specialist.