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Mazda TSB #01-024-15-3110
2015 Mazda CX-9
TSB Document:
Affected Component: EQUIPMENT ADAPTIVE/MOBILITY
- Summary
- SOME VEHICLES MAY EXHIBIT AN 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, WHICH CAUSES NOISE. A REINFORCED PLATE HAS BEEN ADDED TO THE PRE-SILENCER TO INCREASE THE RIGIDITY, THEREBY ELIMINATING DEFORMATION.
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