p171 lean

[Thumper4x4]

well my truch has seem to be running a little under the weather so i decided to check the edge evo for any dtc's. Well i got 1 p171. I replaced the pvc valve and it still came back. What now

 

[westtnfx4]

You have a vaccum leak somewhere.

 

[Thumper4x4]

where should i start looking

 

[westtnfx4]

Around the top and side of the TB....as well as the elbow going to the pcv valve.

 

[Thumper4x4]

update: i now have a p174. Should i replace the whole pvc hose

 

[westtnfx4]

Probably so