One problem related to engine rattling and whining sounds has been reported for the 2009 Acura TSX. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Acura TSX based on all problems reported for the 2009 TSX.
Upon acceleration, engine makes a rattling noise. I have reported this to crown Acura in richmond, va, where they have inspected the vehicle and say this is considered a "normal" sound. The sound is unnatural; I am concerned that this sound will eventually lead to a larger problem and possible engine failure. I have reviewed internet discussion boards and others report this problem as well.