Radiator plug broken
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Radiator plug broken in Past Cadillac Vehicle Discussion; It appears that my radiator plug has broken. Suddenly the coolant emptied & I have no clue as to the ...
  1. #1
    GordonOKC is offline Cadillac Owners Member
    Join Date
    Sep 2004
    Location
    Oklahoma City, OK
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    2

    Radiator plug broken

    It appears that my radiator plug has broken. Suddenly the coolant emptied & I have no clue as to the reason. It seems I can feel what may be the remains of the plug at the back botton driver's side of the radiator. What I can make contact with is level with the opening. This where the coolant drains out when I tested it to discover the source of the leak. It's difficult to reach with a tool. Any suggestions for removal/replacement?

    This is a 1995 Deville 4.9 L

    On edit: Could what I'm feeling be a ring or something that needs to stay?


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  3. #2
    GordonOKC is offline Cadillac Owners Member
    Join Date
    Sep 2004
    Location
    Oklahoma City, OK
    Posts
    2
    Thread Starter

    Re: Radiator plug broken

    There are indeed two parts to the radiator stopcock. The stopcock or plug itself and a collar that fits inside the radiator. In my case the collar cracked which caused the original stopcock to go flying to where-ever. Apparantly this requires pulling the radiator in order to reach the collar inside the drain/radiator.

    The radiator shop told me that "sometimes" the collar will develop a crack causing the stopcock to come out.

    I hope this helps others that experience this problem; hopefully this does not happen often or to you.

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