Date registered: May 2010
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97 C230 Intake Noise?
Recently I purchased a pristine 97 C230 with 120,000 KM. Great car so far in every way. But I have a very strange sound between 105 and 110 KPH. It is a roar that appears to be comimg from somewhere in the engine compartment. It is loader under load, especially on steeper hills but also occurs on the overrun or going downhill although it is less than when under load. There is no such sound below 105 KMH or above 115 KMH.
I have checked tires and wheels.
Any ideas on what that might be? Thanks very much.