Coolant Problem/Thermostat location? '92 100

["Jon Moritz" <jmoritz@medicine.nodak.edu>]

Howdy Folks...


This is on a 1992 100 non-q.
I've been having some trouble with coolant temperature.  The
coolant gauge has been rising above what has been normal and
bouncing a little, but temp has not risen enough to kick in the
fans. During one episode, The low coolant light came on , so I
pulled over to check it out. I found coolant splashed against
the brake booster, but I found no source for the splash.  All
the hoses look in fine shape, the cap and reservoir are not
visibly cracked  and there are no leaks of any kind.  What I did
find was that I was 1/2 gallon low on water. So I filled to the
max line, and continued on my trip, watching the temp gauge. 
The temp gauge was still bouncing a bit, but not enough to kick
on the fans.  My guess is that the thermostat is giving out.  ok
 so I have the Alldata CD to check things out.  I went to look
for info on exactly where the thermostat housing is located, but
to no avail.  AllData simply says to tension the toothed belt if
necessary and to unbolt the housing and slide it out from under
the toothed belt. no picture. no location given.. SO WHERE the
heck is it?!  I spent a couple of hours looking around on the CD
to find the thermostat housing described elsewhere, but have
found nothing. Please help.
FYI stuff: While I was poking about in the engine compartment, I
replaced the serp belt and looked at the t*ming belt.  The
t*ming belt looks in great shape. No cracks or any defects of
any kind; tension seems good. No leaks from the Water pump.
T-belt was replaced at 60k.


Thanks in advance!


Jon Moritz

'92 Audi 100  115k miles
'56 Dodge pickup 98k miles (unrestored original)