Please identify this hose and its function
There is a very large hose(1.5 inch...rough estimate) that runs from the front of the car, along the drivers fender (just inside it), then turns to go under the cowl panel along the firewall towards the passenger side.
It connects down low in the front of the car to what looks like (from above) a black box?
It is disconnected (open) at the end that is running along the firewall.
Can anyone please tell me what this hose is, and if it is ok to have disconnected?
Thanks !!




