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Scenario - I'm driving in slow city traffic or approaching a stop sign from speed around 50km/h, <2000rpm. Whenever I let go of the throttle, there would be a humming sound comming from the engine until the car comes to a complete stop.
If anyone of you have heard a Caravan with tranny issues or any car with a broken muffler it sounds exactly just like that. Or maybe a 20year old car driving beside you and you hear their engine "roaring"

Any ideas guys? It currently has 55k on it so I'll have to bring it back to the dealer quick before warranty runs out.

Thanks a lot guys.
 

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there is a heat shield over the exhaust pipe just below the
front passenger compartment . If is is loose it sounds similar
check it out
Jim
 

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yep that sounds just like mine and i still don't know whats causing it!!! been doing it for at least the last 20k miles, only seems to do it when its luke warm never on cold and never when warm and always at about 30 mph or less....car is 2006 and now with 54k miles. oh and 2.2td
 
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