low idle problem

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lmeavtitn

Senior Member
Joined
Dec 24, 2011
Posts
127
Reaction score
32
Location
Omaha NE
Ram Year
2015 Ram Rebel
Engine
5.7 HEMI
My buddy has a 2006 Cummins and hen is having a problem with his truck. It idles around 300-400rpm no matter if his truck is warmed up or cold. Oddly enough his truck still feels like it idles smooth (well smooth at least for a diesel). His check engine light isn't on either. His truck is completely stock with the exception of an exhaust.

Anyone have any ideas as to what this could be or where I should start looking first?
 
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