![]() ![]() The oil contamination needs to be neutralized, and the engine top loom needs to be replaced. The solution might be simple on paper but isn’t as easy to perform in real life. All sorts of engine problems can arise from this issue, and all of them will be reflected in reduced engine performance. It typically fills the gap under the plug of the red (positive) ECU connector. The engine oil finds its way inside the loom and works its way towards the ECU connectors by capillary action. Land Rover Discovery Series II models fitted with 2.5 L Td5 diesel engines are problematic due to an issue with oil contamination in the loom. Oil contamination in the loom Photo by: Envato Elements Finally, the ACE system has a filter of its own that needs to be replaced at least every 70,000 miles. Furthermore, the ACE pipes are prone to rust and can be expensive to replace. The ACE valve block can be found protruding under the chassis and is susceptible to damage on bumpy roads. However, it also makes it that much more expensive to maintain and repair, should something go wrong. It’s an electronically-controlled hydraulic anti-roll bar system that makes the Discovery 2 a charm to drive on winding roads. The Active Cornering Enhancement (ACE) system isn’t a standard piece of equipment, but some Disco 2’s are fitted with one. Active Cornering Enhancement system issues Photo by: Unsplash While you’re at it, you might even think about a complete suspension overhaul or a suspension lift. Although you can replace only the broken spring, replacing both is advisable as you simply won’t get the same level of handling from two springs in different states. They tend to break more often than those on the passenger’s side, and replacement is mandatory. More specifically, the road springs on the driver’s side. The front suspension can be problematic as well. Rear self-leveling suspension isn’t the end of Land Rover Discovery 2 suspension woes. The result is, as you can guess, another significant repair bill. The latter simply won’t be able to bear the burden of extra strain put upon it by faulty air springs. Leave them unattended for a while, and you’re looking at compressor failure as well. Their replacement, however, isn’t as easy nor cheap. It’s easy to check the air springs for leaks by using some soapy water. There are numerous issues with the self-leveling Discovery 2 suspension, but the most typical failure is when the air springs wear out. Furthermore, most dealers typically have a suspension conversion kit in their inventory for people fed up with their air suspension breaking down every once in a while. The rear self-leveling suspension was a major liability due to its fragileness, and after a few years of coming as a standard piece of equipment, Land Rover demoted it to the options list. Land Rovers and Range Rovers have plenty of problems with their overengineered air suspensions, and the Disco is no exception. Rear air suspension failure Photo by: Envato Elements Here’s the long list of Land Rover Discovery Series II’s most common problems. Most Common Problems of Land Rover Discovery Series II (1998-2004)
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