High there! Can anyone suggest cause of engine fan running continiously. Sometimes after journey, switched off engine and fan would run on, expecting it to shut down within 5-10 minutes. This would be still running 30 minutes later and continue to flattern battery. I have to remove earth cable from battery to stop this. when reconnected the fan will start up again, even when engine cold. Following a journey, switch off engine and the fan is silent, everything seems O K again, but on experience this condition returns again sooner or later. I have checked coolent sensor on cylinder head and expected when unpluged would create open circuit and stop fan , is there something I am missing ? I would be gratefull if anyone can shed any light on this problem please, regards Alan Rendall.