Thanks for that, good idea. However new thermostat and fan switch. Fan works fine if I bridge the switch so
must be getting power. Still no fan coming on and let it run as near to the red as I dared.
Also wondered that it would only accept 5 litres of coolant before overflowing the header tank?
Thought I could run in till thermostat opened and top it up, Top hose, swirl pot hot, lower hose cooler.
Now as well as a slight leak from the new sump and gasket, also appears oil coming out of flex section on exhaust.
Can't see it being the valve stem oil seals so knowing my luck... oil seals in turbo?
Rapidly losing patience with, two steps forward, 3 steps back.Wondered if it could be the Grey or Yellow coolant
temp sensors causing the problem.