Hi I've been doing up my convertible after an year off the road.. and I blew a large hole in the radiator so had to get a nice new shiny one !! After putting it in I realised the engine was running very hot and the fan wasnt switching on.. So I checked the relay and it was fine, shorted between the 30 and 87 terminals and the fan came on, anyone have any help in where else I should check ? Would the thermostat not working cause the fan not to come on.. ?