Today I noticed that the fan engine, although the engine was warmed up for about 1 hour, did not turn on when the engine was running idle for 10 minutes. Is this normal with the Tucson JM/2.0 gasoline engine? I have never had vehicles that did not need the fan at least every 3 – 4 minutes in idle/stow. As soon as the climate is switched on, the fan runs with – as it should be. Upper and lower cooling hose become hot. ==References==