Ok, so i put some wash powder in the coolant and ran it till it was hot, then after it cooled i drained and flushed the coolant. Water ran clear with no gunk whatsoever.
Ive bled it and ran it to see how the temperature was behaving.
Still no change......it takes ages to get hot and if im moving the temperature drops to a quarter.
I did notice the fan wasnt kicking in and if i remove the brown sensor connector the fan kicks in and stays on whether the engine is hot or cold.
So the fan works but just doesnt come on when its supposed to.
Could it be another faulty thermostat? as that seemed to fix it temporarily last time. it only lasted a couple of days if this is the case.
Any help or advice greatly appreciated.