its 04 vti oriel
one day fan stopped working n temperature needle crossed half,so mechanic switched it to direct,other day i went to nazir autos,they checked the car,switched it to auto n fan started working again but today again its not working n temperature needle was at half,now i dont remember which thing he pulled out n put a wire in it to make it direct,i have put water in radiator n on down piping,temperature needle came down,filled up radiator but still water vapours are coming out of radiator n some water as well trying to jump out,now after 45min,i started car again,temperature needle is still at less than half but water vapours are still coming out of radiator n fan isnt working 
is this fan switch?
i tried pulling out with little force but since i am not sure so didnt tried hard
