[s-cars] MFTS or Coolant Thermo Switch Leak and Malfunction.....

[LL - NY]

By the time I got to my 200's, there really *was* no bottom for me to notice
;-)

But, yeah, I noticed on the UrS that it does have a drain hole. For some
reason, when I see stuff like that on the I-5, it reminds me of a home or
industrial boiler.

On Wed, Feb 17, 2010 at 8:31 AM, Stott Hare <stott at gwi.net> wrote:

> Actually a common enough occurrence that the newer weather boots for MFTS
> plugs have a drain hole already molded into the bottom (as most of these
> seem to be mounted in an inverted manner).
>
> -S
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of LL - NY
> Sent: Tuesday, February 16, 2010 8:28 PM
> To: Thomas R Green
> Cc: Jim Fleischer; s-car-list
> Subject: Re: [s-cars] MFTS or Coolant Thermo Switch Leak and
> Malfunction.....
>
> On my 200, when the MFTS started to leak, I simply opened up (actually,
> since it disintegrated, removed) the boot. That extended the time to total
> failure until the actually air temperature was a bit more friendly (why do
> coolant system problems aways seem to happen in the winter?) since it the
> "shorting" situation was averted by letting the sensor simply drain.
>
> On Tue, Feb 16, 2010 at 12:17 PM, Thomas R Green <trgreen at comcast.net
> >wrote:
>
> > Jim,
> > The MFTS is self-powered so it does not need the 4th wire for 12V
> > power.  They are all 3 wire now.
> >
> > They don't usually leak enough to notice the drop in coolant so
> > quickly, so I recommend you take Wylie's advice and look close by for
> > a leaking hose.  If the MFTS is indeed leaking, it is covered with a
> > rubber boot that will be wet inside (and usually shorts out the
> > connectors).  Tips?  Takes a big wrench  that is hard to get in there.
> > You can probably make a small turn with an adjustable wrench and then
> > hand remove.  Be careful with the boot and connectors.  They are
> > probably fragile by now.
> >
> > Tom
> >
> >
> > > -----Original Message-----
> > > Date: Tue, 16 Feb 2010 02:42:53 +0000
> > > From: "Wylie Bean" <theringmeister at triad.rr.com>
> > > Subject: Re: [s-cars] MFTS or Coolant Thermo Switch Leak and
> > >       Malfunction.....
> > > To: "Jim Fleischer" <jim at almgt.com>, s-car-list-bounces at audifans.com,
> > >       s-car-list at audifans.com
> > > Message-ID:
> > >
> > <500232977-1266288175-cardhu_decombobulator_blackberry.rim.net-1657698
> > 094- at bda390.bisx.prod.on.blackberry
> > > >
> > >
> > > Content-Type: text/plain; charset="Windows-1252"
> >  >
> > > Jim,
> > > Mine turned out to be a poorly-located hose clamp on what is/was
> > > otherwise a new upper radiator hose where it meets the water
> > > manifold.  It appeared to be leaking from the sensor, but upon
> > > closer examination it was the hose, and not the one that runs
> > > parallel with the head under the I'm.  I loosened the clamp, removed
> > > the hose, cleaned the dried coolant from around the neck and
> > > replaced the hose, aligning the clamp a little better, and tightened
> > > it up. Survived a trip from Greensboro to Daytona and back with only
> > > slight evidence of a seep. I think the hose is just indented where
> > > the ckamp was and may take a few heat cycles to adjust to the new
> > > clamp location.  I'll recheck it this weekend.
> > >
> > >
> > > Wylie Bean
> > > TheRingmeister at triad.rr.com
> > > 90 cq
> > > 91 90q20v
> > > 92 UrS4
> > > 08 Q7 3.6
> > > Sent on the Sprint? Now Network from my BlackBerry?
> > >
> > > -----Original Message-----
> > > From: "Jim Fleischer" <jim at almgt.com>
> > > Date: Mon, 15 Feb 2010 19:23:38
> > > To: <s-car-list at audifans.com>
> > > Subject: [s-cars] MFTS or Coolant Thermo Switch Leak and
> > > Malfunction.....
> > >
> > > Hey guys,
> > >
> > > Well, My s6 must have overheard Wylie's coolant leak troubles of a
> > > few weeks ago and decided to act up on me......Just changed the oil
> > > about 10 days ago and found the coolant to be a little low, so
> > > topped it off and she's been leaking a bit more ever
> > > since.....noticed the wires from the MFTS (I think) under the
> > > manifold were wet, and today had the red blinking coolant warning
> > > light go off.  Topped off with coolant, and the light is staying on.
> > > Just wanted to be sure this is what I think it is before I order up
> > > and replace.  Anyone have a part # or an online source they could
> > > help me out with?  I read on SJM that there are 3 and 4 terminal
> > > sensors.  Which one do I need?  Anything else it could be?
> > > Tips on R&R?
> > >
> > > Thanks as always!
> > >
> > > Best regards,
> > >
> > > Jim Fleischer
> > > '95 s6
> > > '83 ur (For Sale)
> >
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