What are some causes of hanging rail pressure? Basically if I let off the pedal it takes about 3 seconds for it to idle down, this does not happen all the time but would like it to not happen at all. It does idle down smooth so I assume its not a stuck injector. Any thoughts would be appreciated.

 

normal for the cr trucks. just have to drive around it.

 

I think that is normal for your 06 truck. However need more info. How many miles on it, also is it cold temps out side when it happens.