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

This is a discussion on Will a "ghetto rigged" PCV system cause a high idle? within the General Help forums, part of the LSx Technical Help Section category; My PCV system is set up like its suppose to be with a catch can but minus the catch can. ...

  1. #1
    Senior Member Lunatikgixxer's Avatar
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    Will a "ghetto rigged" PCV system cause a high idle?

    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?

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

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    Veteran 0rion's Avatar
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    so is the intake sucking air? If so it's a vacuum leak and will cause your high idle.

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    Member mike171562's Avatar
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    with a catch-can but MINUS the catch-can????

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    Spaz is My Mentor SMWS6TA's Avatar
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    pls post a pic

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    Senior Member Lunatikgixxer's Avatar
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    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...

  7. #7
    Member mike171562's Avatar
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    I have mine setup like this, no high idle here. i would check for leaks in your hoses.

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    Member jetaws6's Avatar
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    Whats the green dotted line? Is that blocked off?

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    Senior Member Lunatikgixxer's Avatar
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    mike do you have a catch can though?

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    Member mike171562's Avatar
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    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.

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    Senior Member Lunatikgixxer's Avatar
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    damn thats weird, the idle gets worse when the AC is on too... I will check for leaks

  12. #12
    Senior Member Lunatikgixxer's Avatar
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    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?


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    Member jetaws6's Avatar
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    on the back next to the map sensor and that would cause the idle issue

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    Senior Member Lunatikgixxer's Avatar
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    where exactly is that? i cant see jack shit back there.. What if i just cap it off?

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    Member jetaws6's Avatar
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    Spaz is My Mentor SMWS6TA's Avatar
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    yep that's it and it's a PITA to try to get on with large hands.

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    Member mike171562's Avatar
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    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

  18. #18
    Senior Member Lunatikgixxer's Avatar
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    i have skinny hands. Ill try it.

  19. #19
    Senior Member Lunatikgixxer's Avatar
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    Bat mobile black
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    ok turns out the picture jetaws6 sent, that piece is connected, the other side is the side that is disconnected.

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