Odd cooling problem

[rocco16v at netzero.net (L F)]

The coolant in the block/head gains some BTUs while the metal in the block/head loses those same BTUs to the coolant plus BTUs to the air and gearbox, so you have no net gain of heat in the "engine"...in fact it starts losing heat (those BTUs to the air) the instant the key is turned off, which means "net loss" of heat.
Larry
  ----- Original Message ----- 
  From: John Lagnese 
  To: L F ; Calimus ; Captnbr@aol.com 
  Cc: Scirocco-L@scirocco.org 
  Sent: Wednesday, September 10, 2003 5:23 PM
  Subject: Re: Odd cooling problem


  The coolant does heat up right after the car is shut off. The block is still
  hotter than the coolant. The coolant continues to absorb heat, while not
  going through the radiator.
  ----- Original Message -----
  From: "L F" <rocco16v@netzero.net>
  To: "Calimus" <calimus@techography.net>; <Captnbr@aol.com>
  Cc: <Scirocco-L@scirocco.org>
  Sent: Wednesday, September 10, 2003 8:01 PM
  Subject: Re: Odd cooling problem


  Once the engine is off, the source of heat is gone and temperatures start to
  drop, not rise.
  Think about it.

  Larry
    ----- Original Message -----
    From: Calimus
    To: Captnbr@aol.com
    Cc: Scirocco-L@scirocco.org
    Sent: Wednesday, September 10, 2003 1:07 PM
    Subject: Re: Odd cooling problem


    When the car is running, the system is presurized and is also moving and
    being cooled, so it behaves.  Once the car is off, the coolent isn't
    flowing anymore so it isn't being cooled.  This causes a rise in
    temerpature of the coolent and a rise in pressure since as things heat
    up, they tend to expand.  Since the cap appears to be faulty with higher
    pressures, it's allowing the system to puke at higher pressure levels.

    How's that for ya, a bit technical, but without all the big words that
    make me sound like I know what I'm talking about?  Hope that helps.

    William

    Captnbr@aol.com wrote:
    >
    > In a message dated 9/10/2003 3:46:04 PM Eastern Standard Time,
    > brian_wagner@sbcglobal.net writes:
    >
    > <<Replace the coolant cap.>>
    >
    > That's what I was thinking and hoping the problem is.  But can someone
  get
    > technical with me and explain why it will only spill out after I turn
  off the
    > engine?  If the cap is faulty why wouldn't it lose coolant while the
  engine is
    > running?  The fan stays on high speed after I shut the engine off so the
  fan is
    > running when the coolant comes out.  Thanks again.
    >
    > Brian 86 16v
    > 98 Jetta GLX Vr6
    > _______________________________________________
    > Scirocco-l mailing list
    > Scirocco-l@scirocco.org
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    --
    88' Scirocco 16v (Crabby 16v)
    89' Cabriolet 8v (dead bunneh) RIP 8/25/03
    71' Karmann Ghia (air sucker)

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