Quote:
Originally Posted by M3NickM3
Yes enough to heat the car up and have the fan fully kick in
From my understanding its possibly the fan radiator being unbalanced, when in M mode, the car obviously heats up and the fan kicks in maximum
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take your car to a mechanic. I don't think you have the knowledge to dianose anything on your own.
Furthermore if you engine is rumbling u got a serious problem.