[s-cars] Radiator cooling fan won't run

Fred Munro munrof at sympatico.ca
Sat Aug 30 09:23:30 EDT 2003

Hi Bjorn;

The cold side temperatures can exceed 200 C if you are getting up in boost -
that's why a larger intercooler can often give a significant performance
increase. That is probably hot enough to bake that lovely rubber smell out
of your hoses, particularly if they are new. I vaguely recall a post about a
lister melting the plastic crossover pipe on one of the later model UrS cars
as a result of boosting a K24 into a lower efficiency (read high heat
generation) range.


Fred Munro
'94 S4

-----Original Message-----
From: s-car-list-admin at audifans.com
[mailto:s-car-list-admin at audifans.com]On Behalf Of Bjørn Ødegård
Sent: August 29, 2003 7:32 AM
Cc: Tim Leonard; AUDI S Cars Discussion List; 200q20v
Subject: Re: [s-cars] Radiator cooling fan won't run

I changed the temp switch on the radiator, and the MFTS during my belt
change, and I now have a perfect working fan system.
(On the s-cars the fan resistor pack is located just behind and over the
IC, and it's sealed, so I just checked it with a multimeter..)
I can even see what temperature the car has for more than 5 mins at a
time! :o)
The after-run also works, just had to get it hot enough.. ;o)
Recommended repair!

Btw, why does it smell like burnt rubber from a fresh RS2 conversion?
(Not the tyres..) there's no rubber material anywhere close to any hot
parts, so I'm a bit confused here!
How hot is the air from the turbo supposed to be? (had to press the
turbo to x-over tube a bit higher on the new turbo, so it might be a bit
more in contact with the cold side housing.. But I didn't think it would
get that hot there?

Bjorn  :o)
'92 S4 (smells like fun..)

----- Original Message -----
From: "Brett Dikeman" <brett at cloud9.net>
To: "Martin, Gary G" <MartinGG at aetna.com>
Cc: "Tim Leonard" <nard1 at voyager.net>; "AUDI S Cars Discussion List"
<s-car-list at audifans.com>; "200q20v" <200q20v at audifans.com>
Sent: Friday, August 29, 2003 6:35 AM
Subject: RE: [s-cars] Radiator cooling fan won't run

> >> I am looking for the radiator cooling fan control unit in a 1991
200. It
> >> is not located in the left kick panel per Bentley. Where is it?
> >> anyone have insight as to the most likely reasons why the cooling
> >> will not run? It does if power is connected directly to the fan so
> >> know the fan is good. Thanks, Tim Leonard ESCARGO
> > Might be the fuseable link located on the drivers side inside
> > See http://www.sjmautotechnik.com/cooling.html#fuse
> If the fan is known-good, does not run on the slowest speed with the
> on(temp must be over 40 degrees F), and the car overheats in traffic
> Stage II isn't coming on, you're virtually guaranteed the failure is
> fuseable link.
> The plastic cover usually breaks off exposing the link to the
elements, and
> then it's just a matter of time before it corrodes and snaps/breaks.
If the
> link is melted and not broken, obviously you don't want to just toss
> link in there.
> Do not be tempted to jury-rig something "in the meantime".  If the fan
> you can pretty much kiss your main wiring harness, battery, and
possibly more
> goodbye.  Yes, generic links will work if you're in a pinch- 70-80A is
> appropriate, although lower amperages will work OK in a REAL pinch;
the fuse
> is sized for stage III operation, aka "hurricane mode"...
> The linkages are a buck or two each at the FLAD(Friendly[?] Local Audi
> and the part number is N 0 171 253.  See:
> http://www.audifans.com/pipermail/200q20v/2002-May/008357.html
> ...for a complete hardware/PN listing, including a new box.  To nip a
> in the bud- yes, Audi is using a different amperage link currently
than what
> originally came on the car- you may get either the new or old rating.
> Hope this helps,
> Brett
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list

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