Essex90

So I had a play around last night and the temperature gauge shows exactly proportional to how much electrical things running. With everything off it sits just to the left of vertical, about 45% say. Gradually creeps up as more electrics are turned on. Its not instant though, it does take 4-5 seconds to creep up after something is turned on. Thanks Retroanaconda, I'll check the earth strap tomorrow.

Thanks all, I'll do some experimenting at the weekend and see if I can get it to repeat it. Its not a conversion, needle sits half way round I guess, I think I meant 3/4 of the way up the white section. Its sits pretty much bang up vertical so I guess that is half way. Fan bet IS slipping a fair bit. Although wouldn't that stop the coolant circulating the whole time it was wet, i.e doesn't explain why it cooled as soon as I turned the electrics off. Unless I've missed something.

Apologies from the outset if this is a completely newbie question. 200Tdi been running fine no issues with overheating, temperature gauge needle sits about 3/4 of the way around most of the time, nowhere near the red area. Went out the other day, it was lashing down and freezing, had the lights on, 'heater' and fan on full, wipers on max. I only had to nip down the road, a mile on windy lanes then a couple of miles at 55mph on an A road, by this time the temperature gauge had rocketed up right into the red. Luckily by the time I noticed I had got to where I was going and pulled off the A road, turned lights off, wipers off, heater off for the last 1/2 mile at 10mph and temperature gauge instantly dropped back down to normal. The next day I took it out in the dry for a couple of hours and no issues at all. Is it possible that having all the electrics on somehow caused the overheating? Draining power away from the pump or something? Thanks