Unusual Rattle/Buzzing Noise from Exhaust – 2010-2015 Mazda CX-9

2010-2015 CX-9 – UNUSUAL RATTLE / BUZZ TYPE NOISE FROM PRE-SILENCER APPLICABLE MODEL(S)/VINS 2010-2015 CX-9   Unusual rattle/buzzing type noise from the presilencer when driving at approximately 1800 rpm.   The lower (rear-side) of the pre-silencer may be thermally deformed due to insufficient rigidity (fewer weld spots). The deformed portion may resonate exhaust gas pulsations, … Read more