Please make it
Join Date: Apr 2011
Well a safe option (if you can't verify its done) is to get the cambelt, waterpump, variator etc done asap. There will be specialists up your way (others will advise) and you should get change from 450gbp. You may also find that this gets rid of your diesel sound - along with some fresh oil of course.
Ref the temperature, that needs investigating, possibly the thermostat is at fault.
What i would be inclined to do is google an alfa specialist in your area, then search this forum for any reviews of them. When i took mine to its first trip to the specialist after buying they were kind enough to take the car out for a drive, have a look over her, and check for any error codes etc free of charge. You will probably find most specialists will treat you the same.