[s-cars] Multi Function Temp Sensor or Thermostat?

Thu Dec 16 12:12:06 EST 2004

It's located inside the lower radiator hose.

On Thu, 16 Dec 2004 11:53:18 -0500, Robert Myers <robert at s-cars.org> wrote:
> 
> Drain cock?  You found a drain cock somewhere?  On an Audi!? Where?
> 
> At 11:47 AM 12/16/2004 -0500, Tom Green wrote:
> 
> >Only a masochist would claim this is an easy fix, since "you could drain the
> >radiator", means you could also remove the engine pan so you can get to the
> >drain cock and place a drain pan as any good American would.  Probably a
> >good time to flush and refill with that "cheap" antifreeze also since you will
> >most likely lose most of the coolant anyway or you will realize how old it
> >is. ;-)
> >
> >Did I mention that it's cold outside.  Hopefully you have a nice inside
> >place to do all this.
> >It is no coincidence that the thermostat failure gets to the "fix it now"
> >stage just as the polar
> >air gets firmly established in Canada.
> >
> >The timing belt r&r procedure on urs4.com has a photo of the thermostat
> >installation,
> >however everything in the way normally has been removed and you can't see
> >much of
> >the o-ring underneath.
> >The 10 mm bolts on the plastic housing require 7 ft-lbs torque.
> >
> >Tom '95 S6
> >
> >Previously written:
> >>Date: Wed, 15 Dec 2004 20:59:08 -0700
> >>From: Brian Powell <powellb at gmail.com>
> >>Subject: Re: [s-cars] Multi Function Temp Sensor or Thermostat?
> >>To: Rich Beebe <rich at beebecomm.com>
> >>Cc: manuelsanchez at starpower.net, s-car-list at audifans.com
> >>Message-ID: <910ae2660412151959b1cb590 at mail.gmail.com>
> >>Content-Type: text/plain; charset=US-ASCII
> >>
> >>Well, the first mark is 60C, then, the next labelled mark is straight
> >>up at 130C I think (I am going from memory). In between is an unmarked
> >>tick which is normal operating temp, 100C. You should be at or above
> >>that mark after a few minutes of driving. Under hard driving in 100+F
> >>ambient, it can get up towards vertical (though, I've personally never
> >>seen one get vertical).
> >>
> >>If you oil temps are not getting much above 60C, that is not a good
> >>thing. It sounds like your thermostat is stuck open. It is cheap and
> >>easy to fix. You'll need a new thermostat(should come with a seal) and
> >>some coolant. I find it easier to remove the intake boot, then, use
> >>some "wobbly" extensions with a 10mm socket to remove the two screws
> >>in the thermostat housing. Pull it back--coolant will pour out
> >>everywhere (you could drain the radiator first if you like). Get
> >>something to pry out the old thermostat (they stick in there nicely).
> >>Put the new thermostat in the same orientation as the old one (brass
> >>strip should be vertical), put the thermostat housing back on (IIRC,
> >>12 ft-lbs torque--anyone?) and refill the coolant. I like to make sure
> >>the coolant is properly filled, so, I remove the bleeder valve from
> >>behind the firewall (under the plastic cover) and fill the expansion
> >>tank. It will slowly cylce into the whole system with gravity (it
> >>takes about 10-20 minutes) and once it starts coming out of the
> >>bleeder valve, close up the valve, top off the expansion tank to the
> >>mark, and you are done.
> >>
> >>
> >>On Wed, 15 Dec 2004 22:40:16 -0500, Rich Beebe <rich at beebecomm.com> wrote:
> >>>brian et al,
> >>>
> >>>i noticed my water temps staying very low today (around the 2nd thin
> >>>mark), until i stopped at a red light (about 8 miles from the house),
> >>>at which point it rose to roughly to the first thick mark, iirc. what
> >>>you mentioned below about oil temps is what has me thinking, though.
> >>>my oil temp gauge never moves from the far left of the gauge. i
> >>>noticed this upon buying the car and was told that they all read
> >>>low and it's normal. 2 questions - where 'should' my oil gauge 'read'
> >>>and could i have a similar thermostat problem? tia.
> >>>
> >>>rich <-- feeling bad for asking so many questions, but i'm new to audis.
> >>>
> >>>From: Brian Powell <powellb at gmail.com>
> >>>
> >>>>The easiest way to check is to see what your oil temps are doing. If
> >>>>the thermostat is stuck open, it will be hard for the oil to get to
> >>>>operating temp. If your oil is at or past the thick mark and the
> >>>>coolant temp reads quite low, then it is the MFTS. If the oil temp
> >>>>isn't getting up to operating temp, then it is definitely your
> >>>>thermostat.
> >>>>
> >>>>The thermostat is pretty easy to do on this car. Just makes a mess... :)
> >>>
> >>
> >>
> >>--
> >>Cheers,
> >>Brian
> >>
> >>
> >>------------------------------
> >>
> >>Message: 8
> >>Date: Wed, 15 Dec 2004 23:10:04 -0500
> >>From: Rich Beebe <rich at beebecomm.com>
> >>Subject: Re: [s-cars] Multi Function Temp Sensor or Thermostat?
> >>To: Brian Powell <powellb at gmail.com>
> >>Cc: manuelsanchez at starpower.net, s-car-list at audifans.com
> >>Message-ID: <BDE674CC.65511%rich at beebecomm.com>
> >>Content-Type: text/plain; charset=US-ASCII
> >>
> >>well, since my oil temp gauge never seems to move at all, i'd
> >>say a new t-stat is in order. i'm glad this post came up, as i
> >>was never comfortable with the idea that the gauge should read
> >>(normally) where it was. thanks very much for the insight.
> >>
> >>rich
> >>
> >>>From: Brian Powell <powellb at gmail.com>
> >>>Reply-To: Brian Powell <powellb at gmail.com>
> >>>Date: Wed, 15 Dec 2004 20:59:08 -0700
> >>>To: Rich Beebe <rich at beebecomm.com>
> >>>Cc: manuelsanchez at starpower.net, s-car-list at audifans.com
> >>>Subject: Re: [s-cars] Multi Function Temp Sensor or Thermostat?
> >>>
> >>>Well, the first mark is 60C, then, the next labelled mark is straight
> >>>up at 130C I think (I am going from memory). In between is an unmarked
> >>>tick which is normal operating temp, 100C. You should be at or above
> >>>that mark after a few minutes of driving. Under hard driving in 100+F
> >>>ambient, it can get up towards vertical (though, I've personally never
> >>>seen one get vertical).
> >>>
> >>>If you oil temps are not getting much above 60C, that is not a good
> >>>thing. It sounds like your thermostat is stuck open. It is cheap and
> >>>easy to fix. You'll need a new thermostat(should come with a seal) and
> >>>some coolant. I find it easier to remove the intake boot, then, use
> >>>some "wobbly" extensions with a 10mm socket to remove the two screws
> >>>in the thermostat housing. Pull it back--coolant will pour out
> >>>everywhere (you could drain the radiator first if you like). Get
> >>>something to pry out the old thermostat (they stick in there nicely).
> >>>Put the new thermostat in the same orientation as the old one (brass
> >>>strip should be vertical), put the thermostat housing back on (IIRC,
> >>>12 ft-lbs torque--anyone?) and refill the coolant. I like to make sure
> >>>the coolant is properly filled, so, I remove the bleeder valve from
> >>>behind the firewall (under the plastic cover) and fill the expansion
> >>>tank. It will slowly cylce into the whole system with gravity (it
> >>>takes about 10-20 minutes) and once it starts coming out of the
> >>>bleeder valve, close up the valve, top off the expansion tank to the
> >>>mark, and you are done.
> >>>
> >>>
> >>>On Wed, 15 Dec 2004 22:40:16 -0500, Rich Beebe <rich at beebecomm.com> wrote:
> >>>>brian et al,
> >>>>
> >>>>i noticed my water temps staying very low today (around the 2nd thin
> >>>>mark), until i stopped at a red light (about 8 miles from the house),
> >>>>at which point it rose to roughly to the first thick mark, iirc. what
> >>>>you mentioned below about oil temps is what has me thinking, though.
> >>>>my oil temp gauge never moves from the far left of the gauge. i
> >>>>noticed this upon buying the car and was told that they all read
> >>>>low and it's normal. 2 questions - where 'should' my oil gauge 'read'
> >>>>and could i have a similar thermostat problem? tia.
> >>>>
> >>>>rich <-- feeling bad for asking so many questions, but i'm new to audis.
> >>>>
> >>>>From: Brian Powell <powellb at gmail.com>
> >>>>
> >>>>>The easiest way to check is to see what your oil temps are doing. If
> >>>>>the thermostat is stuck open, it will be hard for the oil to get to
> >>>>>operating temp. If your oil is at or past the thick mark and the
> >>>>>coolant temp reads quite low, then it is the MFTS. If the oil temp
> >>>>>isn't getting up to operating temp, then it is definitely your
> >>>>>thermostat.
> >>>>>
> >>>>>The thermostat is pretty easy to do on this car. Just makes a mess... :)
> >>>>
> >>>
> >>>
> >>>--
> >>>Cheers,
> >>>Brian
> >>
> >>
> >>
> >>------------------------------
> >>
> >>_______________________________________________
> >>S-CAR-List mailing list
> >>S-CAR-List at audifans.com
> >>http://www.audifans.com/mailman/listinfo/s-car-list
> >>
> >>
> >>End of S-CAR-List Digest, Vol 14, Issue 72
> >>******************************************
> >
> >_______________________________________________
> >S-CAR-List mailing list
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> >http://www.audifans.com/mailman/listinfo/s-car-list
> 
> Bob
> Random Bushism: "I've changed my style somewhat, as you know. I'm less I
> pontificate less, although it may be hard to tell it from this show. And
> I'm more interacting with people." George W. Bush, Meet The Press, Feb. 13,
> 2000
> _____
> Robert Myers
> Fayetteville
> '95 urS6 - Cashmere Grey
> _____
> 
> 
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