Anyone know what this hose does? (1 Viewer)

[antiacus]

91 FJ80 3fe

It's the bottom of the three hoses that run parallel and are harnessed to the intake hose.

Here's a close up (bottom one with hose clamp and zip tie):

I found them both disconnected. The bottom one runs down to a little unit with 3-4 more hoses poking in & out of it.

 

[Pitch]

The bottom line runs from the check valve downstream of the charcoal canister to the back of the intake, or supplying vacuum; easy to check with the vehicle running. Probably feeding leftover charcoal canister fumes towards the intake. The skinny lines run towards the EGR system.

 

[antiacus]

Thanks pitch! Runs rather poorly when disconnected.