Okay fitted new sender but initially it was even worse , took it for a run and it went up into the red ( well almost ). Bearing in mind I have recently fitted a new heater matrix I checked hoses, both at heater were very hot, top radiator hoses warm/hot but bottom hose cold, released radiator cap , slowly and water came out ?
But temp gauge had dropped a little to between norm and the red.
Then a strange thing happened , it was lead to believe that if you park vehicle with the nose uphill this helps air escape via expansion tank. As I turn the vehicle and placed nose uphill, the temp gauge dropped right down to the normal position !!!!! And it dropped quickly,I have left it ticking over with cap off, now both top and bottom hoses are warm , heater hoses hot, heater working ,
Sorry to be a nuisance but don't want to run and damage something,
Cheers
Donald.