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Enes
Enes, VOLVO Master Technician
Category: Volvo
Satisfied Customers: 4911
Experience:  18+YEARS WITH VOLVO AS THE MASTER VOLVO MECHANIC&Ase
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I have a 2007 Volvo v70 had multiple misfire codes replaced

Customer Question

I have a 2007 Volvo v70 had multiple misfire codes replaced spark plugs and coils now pings at lower rpm sets code ecm304c knock sensor? when starts to ping timing retards any ides
JA: Have you seen the misfire code before? Has the car been stalling?
Customer: no stalling
JA: Are you fixing your V70 yourself? What have you tried so far?
Customer: coils and plugs are new was going to try knock sensor
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 2 months ago.
Category: Volvo
Expert:  Chris (aka-Moose) replied 2 months ago.

Welcome, I'm Chris (aka Moose).

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Were the correct brand plugs used or cheap aftermarket ones?

This pinging is it more so at operating temp and not when cold?