2001 boxster S
this afternoon started to hear a rateling noise from the front of the motor when i drive. it is not there at idle but begins to resonate a fast clatering, rateling sound when i reach 2800 rpm and gets louder to about 3500 rpm. if i rev the motor i can hear it right behind me, always at the same rpm. what the hell can that be
i parked it until i can work on it. tried to insert a mp3 recording of the sound but i can't figure out how
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