Well i know how to make it behave itself its simple.

Dont rag it.



Seriously, i drove about 20 miles today down some windy back roads, sat in traffic and all sorts, for about 8 miles going to a hospital appointment and it sat bang in the middle of the temp guage, between the R and the M and for the whole journey the fan didnt come on once, arrived at my destination, fan wasn't on, no nasty noises, overflowing or hissing. Heaters stayed hot all the way there and back, all was well, until the road before my street and my street, i gassed it, gave it some stick through the gears, pulled up outside mine, it hadnt boiled over, but the fan was going, and it was hissing and popping/farting like a goodun... and it had moved to 3/4 mark on the guage nearing the A/L mark, and the heaters were stone cold... anything about 2500/3000 revs upsets it..

Baffles me this car does. It really does. I was going to take the stat out this morning and get a new cap but didnt have time.