How-To: Diagnosis of Overheating in a Land Rover (V8 petrol engine)

JE Robison of JE Robison Service wrote an informative article on diagnosing and dealing with overheating problems in V8 Land Rovers.

It starts:

So you say your Land Rover overheats? In this article we’re going to cover the steps to diagnose a variety of overheating problems. Some are trivial, and others will require a complete engine overhaul. Overheating is a problem whose repair cost can range from zero to what seems like infinity.

 

Land Rover V8 engines are mostly aluminum with some steel and iron components. Aluminum engines are very susceptible to damage from overheating. Before we begin I need to warn you — if you haven’t been warned already — not to ever drive a Land Rover with the temp gauge in the red, not even a short distance. Driving an overheated Rover half a mile down the highway could cost you an engine.

Let’s begin our diagnosis by opening the hood and having a look...[snip]

Read the full article here.