Question

My 2001 Nissan Pathfinder SE is starting to have trouble idling. It idles fine when starting and even when driving but then when sitting at a red light for a few minutes it starts to decrease then dies out?

Answer 1

There are many things that could cause that problem. Is the engine light ON?

You could start by cleaning the throttle body. Carbon built up on the throttle body could cause low engine idle.

Once the throttle body is clean you have perform the Idle Air Volume Learning Procedure.

Instructions here: http://nissanhelp.com/diy/pathfinder/projects/2001_2002_nissan_pathfinder_idle_air_volume_learning.php