problem with coolant fan
 

hi people i am looking for sum help,i have a 1996 impreza 2000 turbo uk version(preface lift model).the coolant fan in not switching on automatically. i have changed the fan and took the plug out off the coolant temp switch and bridged it and the fan is still not coming on.I have checked the fuse and there is power going too the temp sensor but the plug before the fan is only getting one power feed.Has anyone got any ideas why it wont switch on.And can u please tell me what is the best oil too use in my car.thanks people.:thumb: