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Engine fan making more noise than normal

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This summer I am experience relatively more noise from engine bay when standing at redlight or on slow moving traffic, that If I switch off the AC I can hear it nice and loud inside the cabin. Is this an indication of some issues going to arise, or sometiem BMW 330 behave that way and it's normal....? Btw its over the period of time it has increased and it's not decreasing now nor increasing further.

Cars My passion :mrgreen:  :ugeek:

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Hope you know that bimmers engine fan is super loud and you are'nt comparing with japanese silent beauties. Secondly they run even louder in summer as heat is more and to keep engine cool they push extra as their rpm is directly running through engine speed and engine heat. 

I won't bother about the noise if car in-dash gauge shows me normal temperature like before then it's all good man. enjoy.

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