[s-cars] Stuck closed T-stat?(x posted)

[Rich Assarabowski]

Jerry:

Good news is that on these cars the thermostat is really easy to change, so
it's a no-brainer.  Good opportunity to flush the antifreeze and check for
any suspect cracked hoses or loose clamps.  Careful not to crack that
plastic T-stat housing, they get brittle with age, not a bad idea to buy a
new one while you're at it, they're cheap.

High speed fan is always switched on with A/C on, otherwise control by
coolant temp sensor, so seems OK.

-- Rich A.
   '93 S4


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Jerald S. Beer
Sent: Sunday, August 12, 2007 8:38 PM
To: 200q20v at audifans.com
Cc: s-car-list at audifans.com
Subject: [s-cars] Stuck closed T-stat?(x posted)

Car just started running a little rough at idle after sitting at my
mechanics for 2 weeks without him getting around to checking out some things
(don't ask). Driving home, car is running very hot. I let it cool off, fill
with water. Drive some more and note that the temp gauge, which usually gets
to around 11 o'clock, then goes back towards 10wo'clock (opening of T stat)
doesn't occur. Gauge just keeps moving to the right and is running well
right of center. 
Opening the hood after my drive, water is simply getting squeezed out past
the cap on the overflow reservior. I tried it with no cap when cold to let
the motor run in case there was a big air pocket, but very little water is
sucked down. Oil temp is normal. High speed fan is NOT coming on, but fan
runs with AC and runs on and off without AC (bad resister pack?) Driving on
the highway is no help, car remains very hot. 
I sprayed the rad with cool water and no change in temp. Oil looks/smells
fine, so unlikely bad head gasket. Other than closed T stat, any other
suggestions?
Regards,
Jerry
91 200tqa
_______________________________________________
S-CAR-List mailing list
S-CAR-List at audifans.com
http://www.audifans.com/mailman/listinfo/s-car-list