Moving the info from the other thread here.
Here is my reply from the other thread.
It comes out of the brake booster pictured in my previous post, and runs into the big part of the wiring harness in that area, where it runs inside the wire loom till it comes around to the front right, where the EVAP Canister is.
I'd inspect all of your soft EVAP lines/connectors, and replace them if they are dry-rotting, the hose is not that expensive at any auto-parts store, I found almost every soft EVAP line/connector I had were starting to dry-rot, if you have self leveling struts, then even the soft hose under the right rear of the car, that runs to and from the T connecting to the air compressor, if you get under there and look at it, you may want to check/replace the soft EVAP line that runs to the fuel tank, it is tough to reach, but if you have long arms it is easy to remove that soft part of the EVAP line, the line I am referring to runs alongside the fuel delivery and return lines.
If you cannot find it the soft hose may have fell off, there should be a small plastic nipple from a plastic line inside the loom. I tried to follow mine, and it seemed to follow the loom from that area to the back left of the engine bay, where it made its way towards the passenger side front, it ran alongside under the bumper area, then connected to something on the front right driver side, around where the EVAP Purge Canister was, I could be wrong though, I will try to retrace that line tomorrow when it is daylight.
Here is that pic of it that I posted in the other thread.