Forum Discussion

mrwrenchman's avatar
mrwrenchman
Explorer
Jan 04, 2015

Engine fan

I have a 2006 Monaco with a 8.8L 400HP Cummins side radiator . Recently I noticed the engine fan is running full speed all the time . I know the fan is driven hydraulically and I think it thermostatically controlled . Is there a thermo. control valve somewhere that is possibly stuck in the wide open position , or some other condition .Any Ideas ? Thanks Don