Question about 1996 Land Rover Discovery

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Land Rover 3.9 V8i Cooling Problem

This started about 2 months ago, the car would lose water or bubble up and out of Header Tank

There has only been one instance when the temperature gauge in the car altered to show high temperature, usually the car loses water but the temp gauge stays unaltered.

Things I have done to try to solve this:-

· Replaced Thermostat

· Replaced Header Tank & Cap which blew on May Day Bank Holiday

· Replaced Top Hose
(System filled from screw cap on top of radiator whilst running and
header cap off)

· Pressure Tested via RAC(Whilst Hot)

· Pressure tested when cold at land Rover Specialist this showed small leak from a core plug and from engine case but not big enough to worry about


Car now for the first time, gets hot, never done this previously did it on Sunday 14th June on a 100+ mile round trip to the coast. Temp gauge went between half way(usual running temp) and the red at this point the heater was on and blowers.(Was a very Hot Day)

Monday, ran the car on short runs for 3 hours stopping and starting and had to stop to wait for someone the car started to heat up.

Under the bonnet the top hose felt hot but hard, don’t know if this because hose is new or if there is a pressure problem. There is also a smell of engine coolant coming through the heater vents from time to time.

Please respond to

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I have experienced a few radiators on both discoveries and series 2 range rovers being blocked causing overheating. Also might pay to check your fan hub when the engine is hot switch off and check how freely you can turn the fan

Posted on Sep 25, 2009

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Pressure test the system, it sounds like head gaskets that is backing into the water jackets and not the oil ports, which is the best of the two. Have heads checked for cracks of warping.

Posted on Sep 09, 2009


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