Blown Head Gasket (was:Power loss and white smoke)

[L DC]

Hi Alexander,

Yes, is the same here in the US.

But the damn warning light did not blink in the case
of my car. Just my luck I guess.

When the sensor on the reservoir tank or its relay is
defective, it manifest itself by the blinking red
light, even if the temp or coolant level is normal.

-Regards,

-Louis



--- Alexander Mitchell <mitch_2000_uk at yahoo.com>
wrote:

> every audi i've had here in the uk except my 1979
> A80 gls on a YP engine uses a reed switch in the
> expasion tank and reports lack of coolant as soon as
> the coolant level drops below it by means of a
> flashing warning lamp is this not the case in the
> u.s? currently running A90 2L with JS engine code
> 
> 
> 
> ----- Original Message ----
> From: L DC <ldc007usa at yahoo.com>
> To: Greville Bowles <gbowles at cansafe.com>;
> quattro at audifans.com
> Sent: Wednesday, 19 April, 2006 4:05:55 PM
> Subject: RE: Blown Head Gasket (was:Power loss and
> white smoke)
> 
> Greville,
> 
> I believe you're right about the hardness in the
> cooling hoses is due to gases leaking in and also
> because of water not circulating properly (in the
> case
> of a bad/blown head gasket).
> 
> I'm not an expert on the matter but in the case of
> my
> car, it was clear cut; the head gasket had gone
> south
> due to the oil mixing with water evidence.
> 
> You mentioned your head gasket was replaced barely 3
> 1/2 years ago?
> 
> The head gasket in my car--('87 VW Quantum
> Syncro--same drive train as the 4KQ)-- went south
> due
> to the bursting of a heater hose while cruising at
> 85MPH in 90* weather on a very humid day. Head
> gasket
> was the original, never been replaced.
> 
> I saw the H2O temperature needle in the gauge climb
> to
> overheat, so immediately pulled over, but it was too
> late. The engine had bled to death, not one drop of
> water left in the cooling system, dooming the head
> gasket.
> 
> If my eyes would have been fixated on the H2O
> temperature sensor during that drive, perhaps I
> would
> have stopped in time and, thus, save the head gasket
> and cylinder head. 
> 
> Temperature sensors, when in working order, are good
> as long as liquid is present and circulating
> properly
> where they're (sensors) embedded.
> 
> Thinking back on my mishap, the H2O temperature
> sensor
> was giving me an accurate reading of the H2O
> temperature prior to the incident. 
> 
> But what happens when you deplete the system of the
> liquid?
> 
> You get a false reading.
> 
> Again, if I had my eyes on the temp gauge, I can
> imagine I would have been able to see, say, a sudden
> drop in the needle, due to the absence of H2O,
> followed by a rise in the needle, as it did and I
> happened to notice, with reading based on just pure
> engine heat, coming mostly from cylinder head?
> 
> Who knows? 
> 
> And also, who the heck drives with their eyes
> fixated
> on any of the gauges anyway?
> 
> One of my friends suggested installing a H2O
> pressure
> sensor containing both, visual and audible features.
> But does such device exist?
> 
> -Best Regards,
> 
> Louis
> 
> 
> 
> --- Greville Bowles <gbowles at cansafe.com> wrote:
> 
> > Thanks Louis. I will definitely check the hoses
> the
> > next time I have the car running. I assume that
> the 
> > hardness is due to exhaust gas pressure leaking
> into
> 
> > the cooling system and the foam is due to coolant 
> > leaking into the oil. I have changed the oil and I
> 
> > didn't see any problem with it. 
>  
> > 
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Mr. Greville H. Bowles
> > Ralston CanSafe
> > 525 Glengarry Cres.
> > Fergus, Ontario  N1M 2W8
> > Phone: (519) 787-1297  Ext. 39
> > Fax:   (519) 787-3732
> > E-mail:   gbowles at cansafe.com
> > www.cansafe.com
> > ~~~~~~~~~~~~~~~~~~~~~
> 
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