užgesinus motorą ventiliatorius turi išsijungti, ir esant reikalui įsijungti afterrunas. Pvz pas 200 20v 1 greitis įsijungia ant 93C, antras kažkiek 10?C. O after-run'as veikia nuo 110C ir pučia iki kol temp nenukrenta iki 97C. Afterrunui net atskiras daviklis pas mane stovi. Gal ir pas Tave panašiai. Va šiek tiek apie jį:

This after-run temp sensor is designed to turn on the low speed radiator fan and turbo coolant pump when the coolant at the sensor reaches 110 degrees Celsius (230F), the sensor will turn off the after-run system when the coolant temp drops down to 97 Celsius (207F). The sensor is also designed NOT to work above 130C to avoid any problems, I suppose, if a fire should start in the engine compartment.