thanks for ya replies,got rad of a breaker (shame i know) but aperared to be in real good nick but weather blocked inside who knows,it is a little bit blocked here and there with baked mud between the fins but just cant get the stubon stuff out,so wonder if that could be the prob,wat ya recon?if not have to wip it off and try flush it out .if not new rad then.shame because had a brand spankers on there and put big hole in it,never mind,is their any way of getting the baked mud out of them anyone,tryed the old jet wash but dont really shift it that well,cheers anyway been well helpfull coments,are let ya know the out come,by the way got electric fan by manual switch but barely have to use it,have tried it but makes no difference,cheers all - Daz