Question about 2005 Mercury Grand Marquis

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I have a 2005 Grand Marquis (under 50,000 miles) and when i first get started, while accelerating, there is a rattling noise...definitely sounds like it comes from the front of the car versus the rear..doesn't sound like "spark knock" or valves clacking...my dad, who owned the car before me, said he took it to Ford dealer, and they had no idea...thanks! Lauren from Georgia

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I would be willing to bet it is the catalytic converter! I just had mine repaired and it is covered under the emissions warranty. Hard to believe the Ford dealer didn't know since it is a no brainer for them to get paid!

Ron
Celebration, FL

Posted on Sep 17, 2009

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