2004 Nissan Murano SE 6 cyl with 78K miles started running rough recently. When it is cold, it runs rougher which never happened before (I'm the original owner). Had the iridium spark plugs replaced, but it didn't seem to help. Almost sounds like it could be the headers or exhaust or if something is loose and shaking under the car because it doesn't always happen. It happens when I'm driving on the freeway and off, but comes and goes. Anyone hear of this?
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Saturday, December 11th, 2010 AT 2:28 AM