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Discussion Starter #1
Barely hear the rumbling / grumbling at idle in park, when put into reverse it is really loud. At all speeds it rumbles quite loud, but everything SEEMS to feel ok and it drives fine.

Noticed that the ECO light doesn't come on. Shortly thereafter the check engine (engine shaped light) came on.

Any ideas what may be the problem? I think it may be the VCM system or a motor mount.

Any ideas?
 

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Discussion Starter #2
update

As I am looking online, my wife called with error codes from the shop - P0300, 301, 303, 304...

They say its misfiring. Could be coils, injectors, ...

any ideas before I commit to paying $$$$ to have it fixed?
 

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shop cleared the codes. Light is off and the problem seems to have gone away. They recommended a tune up, which is not a bad idea, as it needs to be done now anyway.

Anyone know what I could check while I am replacing the spark plugs? Is plug replacement a DIY job? Seems the 3 in the rear are tough to get.
 
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