4 rear Plenum hoses
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Cadillac Catera and Cimarron Forum Discussion, 4 rear Plenum hoses in Past Cadillac Vehicle Discussion; I just replaced the heater control valve in my 2000 Catera and realized I have a plenum hose that's not ...
  1. #1
    azmonsoon is offline Cadillac Owners Member
    Automobile(s): 2000 Catera
    Join Date
    Sep 2007
    Location
    Arizona
    Posts
    11

    4 rear Plenum hoses

    I just replaced the heater control valve in my 2000 Catera and realized I have a plenum hose that's not connected and appears to be broken off at one end. I know it's the second from the left (passenger side) the smallest diameter hose. but for the life of me I can't figure out where it's supposed to connect to....it looks like it's about the size of a 1/4 inch hose and has a couple of curves in it and when attached to the plenum, other end points toward the drivers side....any help would be appreciated!!

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  3. #2
    jupiter57 is offline Cadillac Owners Member
    Automobile(s): '97 DeVille, '98 DeVille, '97 Catera
    Join Date
    Feb 2005
    Location
    Lancaster, Kentucky
    Posts
    77

    Re: 4 rear Plenum hoses

    See if these Diagrams help ya!
    Vacuum hose:
    Catera Vac Diag.gif
    Crankcase Ventilation Diagram:
    Catera CrnkCase Vent.gif
    Emissions Diagram:
    Catera Emiss. Diag.gif

    The hose you have broken appears to be (13) Crankcase Ventilation Primary.

    EDIT: Found the Diagram showing where it connects! (Hose #9 on Crankcase Ventilation Diagram)

    Hope this helps!

  4. #3
    slimrob is offline Cadillac Owners Member
    Automobile(s): 1999 Catera
    Join Date
    Mar 2013
    Location
    Princeton, FL
    Posts
    4

    Re: 4 rear Plenum hoses

    Hi Azmon:

    Did that unconnected hose prevent the car from starting? My brother-in-law's Catera is not starting. As I was inspecting the Crank Position Sensor, I found the same thing you did. Any help would be appreciated.

  5. #4
    slimrob is offline Cadillac Owners Member
    Automobile(s): 1999 Catera
    Join Date
    Mar 2013
    Location
    Princeton, FL
    Posts
    4

    Re: 4 rear Plenum hoses

    jupiter57: Thank you for the info and diagram. It really helped me. My brother-in-law got a generic hose from the autoparts store and installed it. But need help getting the Catera running. See this thread. Any help would be greatly appreciated.

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