[s-cars] Pissing Coolant

[Joe Pizzimenti]

3 words:  Cold start enrichment


On 5/1/08, Stott Hare <stott at gwi.net> wrote:
> Why would replacing the temp sensor in the "T" fitting affect fuel mileage?
>
> My understanding is that particular temp sensor is for the HVAC controller
> (so it can adjust for incoming coolant temp and regulate cabin temperature
> accordingly).  I believe the temp sensor the Engine ECU monitors in regards
> to fuel mixtures is the white 2 pin sensor on the rear of the head, above
> the plastic fitting on the block (which feeds Douglas' broken "T" fitting
> and the heater core).
>
> -Stott
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Tom Green
> Sent: Thursday, May 01, 2008 9:59 AM
> To: s-car-list at audifans.com
> Subject: Re: [s-cars] Pissing Coolant
>
> You must have ignored a lot of emails on this subject, Douglas.
> All these plastic connectors are brittle by now and are subject to
> failure at
> any time.  This includes the thermostat housing of the same material.
> I would
> source them all and replace at the same time.  It's not a big job and
> most of
> the coolant has already been lost.  If the thermostat is old, replace
> it at the
> same time and avoid breaking into the system again.  You may even find a
> nice fuel mileage increase from changing the temperature sensor in
> the "T".
>
> I know you said you are short of time but consider getting all the
> parts and
> replacing them before you put $20 of coolant in there.  If you can't
> get the
> tee fitting in time, you can use a copper pipe fitting to get home.
>
> Tom
>
> -----Original Message-----
> > Date: Wed, 30 Apr 2008 23:35:29 -0500
> > From: "Douglas Fifield" <douglas.fifield at gmail.com>
> > Subject: Re: [s-cars] Pissing Coolant
> > To: "Sean Douglas" <s_douglas at telus.net>
> > Cc: Scar <s-car-list at audifans.com>
> > Message-ID:
> > 	<fb4d2bb0804302135q195efabdse9c05cb05de66a47 at mail.gmail.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> > Guys,
> >
> > Thanks for the P/N's.  I'll call the stealer tomorrow and try to
> > source it.  I'll let you know how it goes.
> >
> > D.
> >
> > On Wed, Apr 30, 2008 at 9:50 PM, Sean Douglas <s_douglas at telus.net>
> > wrote:
> >> Douglas;
> >>
> >>  This is a common failure, the plastic T fitting gets old and
> >> cracks. You
> >>  will need a new T fitting, 4A0 819 497. The sensor is 025 906 041
> >> A and its
> >>  blue.
> >>
> >>  While you are there, you might as well replace the plastic
> >> fitting at the
> >>  back of the head where the other end of the hose connects to, 034
> >> 121 143 E
> >>  and gasket N 900 351 03.
> >>
> >>  Sean
>
> >>
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