Engine Cooling System Malfunction
Hi, Observed that while I am driving my VW Golf 4
in a highway during the cold weather like less than
5 degrees C the engine temperature lowers up to
35_40 degree C but when for example I am in
traffic jam then the temperature goes up to 120
and more if I do not stop the engine or switch on
the AC, basically by switching on AC the 2 fans in
front of the engine start turning which helps to cool
the engine down to 90 degree C. Those 2 fans
never activate unless the AC is switched on. What
could be the cause of this malfunction? Is it any of
the faiped sensors which prevents fans
activations?