What is this ?? see pic

[wolfort]

Hi, Does anyone know what is the purpose of this tiny hose linked to the upper intake manifold ?

I know the PVC and EGR, but don't know what's this. See red circle.
Thanks.

[The_Mechanic_33]

normally it goes To the tranmission:

The vacuum modulator system on the transaxle controls shift sensing changes in engine load,by engine vacuum.

but yours dont look right,,what make and model??

[wolfort]

02 malibu with 3100 v6 engine.
I just broke this hose, see the duct tape.
It was bundled with electric wires, it's very fragile after years.
Not sure if I need to replace this.

Originally Posted by The_Mechanic_33

normally it goes To the tranmission:

The vacuum modulator system on the transaxle controls shift sensing changes in engine load,by engine vacuum.

but yours dont look right,,what make and model??

[The_Mechanic_33]

ok then it goes to the air vacuum solenoid valve by the coil pack.

[The_Mechanic_33]

You can either replace it or use rubber tubing over the tube,careful not to break it any further,the duct tape will eventually breakdown and recreate a vacuum leak.