I posted this in the wrong forum too.

03 accord LX coupe, v6

Just discovered that the hose my finger is pointing to in the attached photo is not connected to anything on the other end. Can someone please tell me where the connection for the other end of this hose is located. TIA.

 

That is the engine mount control solenoid valve.

1. The engine mount control system comes on Accords with automatic transmissions. It is used to control excessive vibration at low rpms (e.g. idle). At low rpms, the PCM sends a ground signal (-) to the engine mount control solenoid valve, which opens the valve. There is one vacuum hose from the intake manifold and another vacuum hose that goes through other lines and finally to the front engine mount on the 2004 Accord V6.
2. If the engine mount was replaced before with an aftermarket solid mount, then they may be why it is disconnected. (Aftermarket has both solid rear mounts and vacuum assisted rear mounts for replacement.)

 

I had the front and rear mounts replaced recently so that would explain the tube to nowhere. Should I plug the end of that hose? Is it causing any loss of vacuum?
Thanks for the answer. Much appreciated.