Hi Folks excuse the first post as always the worst. Picked up a 2000 4.0 SE which I think has turned out to be a pup. Did 150 miles without issue and then 10 miles from home and the temperature swings wildly into the red and expansion tank kicking out what was left of the coolant (muddy water probs). Got towed for the rest and then the last 2 weeks has been in the local garage. They have (1) changed radiator (2) checked for the dreaded head gasket failure including compression tests and all good so far. Now this is where it gets mildly interesting. they put a new thermostat in for good measure and have said that as the car warms up and they have taken it out for a good spin the radiator does not get uniformly hot, the thermostat does not open fully and the car will look to overheat. When they start it up, one of the guys holds the main fan, the radiator gets fully hot, thermostat opens and no overheating.... so after £565 they have now taken out the thermostat and given me the car back. I am crying in my beer when my good lady takes it out in kent today and says blower is only cold, temp never gets above blue on the level and only in town does it creep above that level. I tried this all tonight with idling, driving around the block and even with the car at full temp when the blower is on full no hot air. I took the expansion tank lid off (let it cool first) as there was a general hissing even before I let it cool. I checked there was sufficient coolant, restarted the engine and watched when I revved the engine slightly - coolant looked to circulate in from the top pipe and no bubbles or overflows etc.... I am loathed to take it back to the garage as they then want to replace the fan with an electric one as another workaround or bodge. Can someone please help or at least point me to a good specialist in my area in kent. Thanks guys.