operating temperature?

Peter Schulz pcschulz at comcast.net
Tue Dec 5 09:30:15 EST 2006


Simple answer- Thermostat- it's sticking open and not closing 
sufficiently for the coolant in the engine to heat to the 87Degrees C.

I have had mixed luck with replacement thermostats that are either 
aftermarket (Wahler) , or ones purchased from the dealer.

By mixed luck, I am getting only 1-2 years of life from them - the 
latest casualty is on my 90q- I purchased the thermostat from the 
dealer, and less than a year later (and now that its getting colder) 
I find that I will AGAIN have to replace it.

I plan on doing some root cause analysis after I replace it.


At 09:07 PM 12/4/2006, Jeremiah Curry wrote:
>Howdy all,
>The other day a friend was riding in our 99 Passat V6 and asked why it never
>reached operating temperature.  The center of the temp guage is labeled 190
>and it never got close.  That made me wonder and I noticed that my 1991 200
>20v never gets to the middle of it's temp guage either.  Should it? (it is
>about 20 degrees outside, but they have both been on fairly long drives, 1
>hour or more)  I am wondering if either or both of them have bad
>thermostats, they both blow warm from the heater, but not really hot.
>200q20v mailing list    http://www.audifans.com/mailman/listinfo/200q20v

-Peter Schulz
Chelmsford Ma, USA

1995.5 S6 Emerald/Ecru
1991 200 20v Q Avant Titan Grey
1991 200 20v Q Avant Indigo Mica (for Sale)
1991 90 20v Q Red

1990 CQ silver
1991 CQ silver  (eS2 recipient)
1990 CQ red (sold)

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