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

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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, which causes noise.

A reinforced plate has been added to the pre-silencer to increase the rigidity, thereby eliminating deformation.

 

REPAIR PROCEDURE

  1. Replace the presilencer (A). Refer to MS3 online or Workshop Manual (section 01-15).
presilencer (A)

 

PART(S) INFORMATION

Part NumberDescriptionQty.
CA11-40-300CPresilencer1
AJ17-40-305 Unusual Rattle/Buzzing Noise from Exhaust - 2010-2015 Mazda CX-9 | small lightGasket1
FSB8-40-305 Unusual Rattle/Buzzing Noise from Exhaust - 2010-2015 Mazda CX-9 | small lightGasket2

 

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