another update, basically the long and the short of it. its not overheating to dangerous levels, fan kicks in around just after the M, it will go a little past that but never anything off the A on the NORMAL on the guage.,,

What i cant work out is why i cant get no heat from the heaters when its stationary no matter how high i rev it or squeezing hoses etc it just wont have it, whether the engine is cold, warming up, warm, or with the fans going, the heaters stay cold, until you drive it, give it death and then the heaters burst into life for a few minutes but as soon as the engine is driven at slower RPMs then the heaters go cold again.

Seems to be taking water into the header tank, holding it, then randomnly spewing it back out of the header tank..

Does anyone know where the bleed nipples are on these V6 engines? and does anybody know where and how i go about accessing the heater matrix hoses?

Cheers