I've got exactly the same problems, so far I've had the HG tested and all came back clear- quite normal apparently. Had a new rad,waterpump and thermostat: still have the same probs! I'm gonna disconnect the matrix if it still over heats then I have to Accept that it's the HG Sorry to say but I...

Hi, I'm in need of advice, I have a x reg disco td5 with coolant issues!!! She drives fine but if you get to about 70mph the temperature rises and I loose power and water, also I loose the heat from the heaters:( I've had it checked for HG failure and came back clear. I've had a new...

Hi, I'm in need of advice, I have a x reg disco td5 with coolant issues!!! She drives fine but if you get to about 70mph the temperature rises and I loose power and water, also I loose the heat from the heaters:( I've had it checked for HG failure and came back clear. I've had a new...