Rattling noise when Accelerating

Asked by Nov 26, 2016 at 02:10 AM about the 2007 INFINITI M35 Sport

Question type: Maintenance & Repair

My 2007 infiniti M35X is making a noise when I accelerate and reach speeds at
40mph and 70mph. It's like an exhaust rattling noise or something to that

2 Answers


Might be a loose catalytic convertor heat shield. The tend to rust and the welds break loose and rattle at certain rpms and speeds.


Are you running premium fuel as recommended?

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