vectra boiling after freezing?

thanks for your rely westy,takes a good time to get to temp. so im hoping not gasket top and bottom hoses tight whith pressure when hot could rad be blocked still?? if pressure on hoses would pump be faulty? what sott of temp will bring in cooling fans ? also now showing management light thanks again

mick
December 2010

water pump faulty?
still frozen up somewhere in the system?
airlock?
head/gasket issue?

Westy
December 2010