Tension is accomplished with a belt tensioner, it is probably defective and needs replaced.
The 2005 Nissan Pathfinder has a V6 engine.
The 2003 Nissan Pathfinder has a V6 engine.
The 2002 Nissan Pathfinder has a V6 engine.
The 2001 Nissan Pathfinder has a 3.5 L base engine size.
The 2013 Nissan Pathfinder has a V6 engine.
The 2011 Nissan Pathfinder has a V6 engine.
The 2010 Nissan Pathfinder has a V6 engine.
The 2004 Nissan Pathfinder has a V6 engine.
The 2008 Nissan Pathfinder has a V6 engine.
The 2001 Nissan Pathfinder has a V6 engine.
The 2012 Nissan Pathfinder has a V6 engine.
The 2009 Nissan Pathfinder has a V6 engine.