Vacuum line troubles...

[fe731as]

Soooo. Where to start...threw the serpentine belt on Friday night. Replaced the belt and tensioner pulley. After restart, engine running rough with misfire. P0351 code(coil A fault). Already planning coil/plug replacement-192.5k miles.
Just as important, there is a vacuum line that is now disconnected, and I CANNOT find where it goes. *image attached*
Any ideas?

 

[06 Eddie]

looks like the one that connects to the heater control valve..... on the passenger side find the coolant hoses that have a T fitting, follow that up towards the throttle body and you should see a cylinder or canister like thing connected to the hose, there should be a vacuum line connected to the front.

 

[06 Eddie]

I just looked again and see it looks like the driver side, there is also a line near the rear 2 ignition coils