S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

recommended indy in Tampa area?

Old 09-06-2015, 10:04 PM
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2009 S550
recommended indy in Tampa area?

Possibly the hardest part of leaving Northern California was leaving my mechanic behind. Anyone living in the SF Bay Area should do themselves a favor and see Erich at Precision Motors in Oakland.

Recently my '09 S550 has developed a difficult to describe issue. When there is a load on the engine, there is a sound that can best be described as being similar to a motorboat engine. It's more apparent on a cold engine, and still present, but less prominent when the engine is at operating temp.

If I rev the engine in neutral the sound is most obvious around 1500 RPM, and it seems to get louder (for a moment) after going over a dip in the road when downward pressure would be applied to the rear suspension.

So... any suggestions on a good independent in Tampa that could take a look at this? And any ideas on what the cause might be? Currently at 70k miles, and I have detailed service records from new. No service intervals have been missed, and no past issues.

Thanks!
Old 09-11-2015, 07:45 PM
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2009 S550
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