Engine Knock/Rattle at 2500 RPM

cjw569

Member
:
2008 CX7 AWD GT
Just started today. Pulled out into traffic, punched the gas and the car stalled. Got it restarted, it seems to idle fine. But when you rev the engine in N or in D at 2500-3000 rpms it makes a loud knocking/rattling sound. Seems to drive okay, no warning lights etc.

any ideas?
 
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