Are you sure that the engine is really hot? My temperature gauge shows 20 deg too high. I also wondered why the fan is not kicking in and mounted a manual switch. Last year I got me a thermo camera and now I know better;-)
Miklos
1973 2CV AK400 Ralley 1985 plus 4 four seater 1992 Peraves ecomobil bicycles (pedersen to recumbent)