Will a "ghetto rigged" PCV system cause a high idle?

[Lunatikgixxer]

My PCV system is set up like its suppose to be with a catch can but minus the catch can. So the hoses are just dumped to the bottom of my motor... Would this cause a high idle?

[Mr_Rich]

It's essentially a metered vacuum leak. If you plug the hose, does the idle drop?

[0rion]

so is the intake sucking air? If so it's a vacuum leak and will cause your high idle.

[mike171562]

with a catch-can but MINUS the catch-can????

[SMWS6TA]

pls post a pic

[Lunatikgixxer]

it is set up like this http://www.ls1tech.com/forums/attach...cv-1ls1ext.jpg
but i have no catch-can. I have the instake valve that sucks air in capped off so there is no vacuum leak there...

[mike171562]

I have mine setup like this, no high idle here. i would check for leaks in your hoses.

[jetaws6]

Whats the green dotted line? Is that blocked off?

[Lunatikgixxer]

mike do you have a catch can though?

[mike171562]

No catch can , I may add one later, but its running fine without one. I switched from 98 valve covers to ls6 valve covers which dont have the extra nipple on the back passengers side.

[Lunatikgixxer]

damn thats weird, the idle gets worse when the AC is on too... I will check for leaks

[Lunatikgixxer]

ok so i checked everywhere and i checked the back of the intake and found this, i think i forgot to put it back on when i put my manifold back on... Where does it go?

[jetaws6]

on the back next to the map sensor and that would cause the idle issue

[Lunatikgixxer]

where exactly is that? i cant see jack shit back there.. What if i just cap it off?

[jetaws6]

2011-02-13_11-22-28_492.jpg

[SMWS6TA]

yep that's it and it's a PITA to try to get on with large hands.

[mike171562]

I have big hands and you can get them back there if you get in at the right angle. its pointing toward the passengers side on the back of the intake

[Lunatikgixxer]

i have skinny hands. Ill try it.

[Lunatikgixxer]

ok turns out the picture jetaws6 sent, that piece is connected, the other side is the side that is disconnected.