Unknown Hole At Air Filter Housing, G Voyager 2002

[turtlepowerdaniel]

I have a grand voyager 2.5CRD manual  2002 and not long had it, was checking the condition of my air filter when I noticed as I was putting the cover back on that there is a small Tube bit on the right hand side near the main pipe that goes to the turbo/engine. the small tube has a rubber cap that is covering a hole and was wondering why? surely there is a reason and was wondering if best to keep the cap on or off as it doesn't seem to effect the running of the car either way.

 

I hope that made sense

[T14086]

If its #past' the air filter then best to leave it incase the engine sucks in unfiltered air at this point.

 

Some models had an air temp sensor fitted, can you take a picture of this tube and post it up?

[turtlepowerdaniel]

yes it is past the point where the actual filter is, I will try and get a picture of it. I have left the rubber cap on as I thought about the prospect of a bit of dirt getting sucked in.