I own a 2001 range rover 4.6L.This vehicle overheats.A local mechanic made me replace the radiator, water pump and heater sensor and it still overheats. He claims there is an air pocket somewhere in the motor. While driving (5miles) the temp. reading goes up and heavy pressure builds up in the water reservouir and the water steams right out through the cap. I hope you can help. Thanks, David
First of all, my apologies for the misfortune of purchasing a range rover. I purchased a '97 back in '99. After four trips to the dealership to address overheating problems I feel your pain. One of my rover's six recalls required replacement of all of the coolant hoses twice. Apparently the original hoses could burst, and cause injury to the owner. The second retrofit had the same problem, and were again recalled. Ever since the third entire hose change out, it had been overheating at intersections on any hot day. Like burying the temperature gauge needle type overheating.
To give you some background information: The engine used in the Range Rover is an aluminum V8 design, purchased from Buick (GM) way back in 1963. Little has changed in the design, aside from adding fuel injection and nearly three tons of Land Rover. This was a poorly designed engine, and was quickly discontinued by GM. The steel cylinder sleeves would move in the aluminum block because of dissimilar coefficients of expansion from the metals, and usually died from blown head gaskets. How do I know about that? I owned one of those Buicks in my youthful days :(
Land Rover describes the same engine failure as the ability to "slip a sleeve". Meaning that compression gasses can be lost into the water jacket, creating a vapor lock in the cooling system. This sort of failure is catastrophic, and elusive to pin down. The only resolve is to replace the engine. One obvious symptom is swollen hoses, and coolant hemorrhaging from the clamp points. Mine had both showing. The dealer has repeatedly tried to avoid replacing the engine by instituting a number of poorly conceived fixes, and then giving it back to me; only to have it overheat again.
In summary, it may be time to start looking for some new wheels. My warranty expired in August 2003, and the Rover expired three months later. I had it repaired, and promptly placed it up for sale. It was quickly sold to an Italian gentleman who believed Fiat cars were well engineered : )
the same thing just happened to my frontera 4x4, It was the head gasket! i am now in the process of taking the head off to replace gasket and skim head. U really need to sort it out else u r going to crack the head and bugger the engiene up completely. All this from a girl x x
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