righty ho, the problem is as ive said above, ive done the following so far. replaced thermostat, flushed and back flushed radiator till it ran clear, flushed and backflushed heater matrix. ive also replaced the heater resistor, under the dash. im guessing because it blows hot at first , its not the resistor... i have also just noticed while waiting for the car to get upto temp, that the botttom pipe off the rad stays cold to the hand , whilst the top is el scorchio... even after the fan kicks in which it does as it should , the bottom hose stays cold to the hand, the pipes in and out ofthe the