[s-cars] Not exactly S-car-related, but very Audi...

[Mark Pollan]

Is it truly the coolant temp or is your gauge and/or MFTS wanky?  I assume
you can check coolant temp via CC head manipulation.  Perhaps more simply
asked is whether wifey gets hot?  Oops did I say that ;-)  Does Lago's
coolant get up to temp as expected with corresponding nice warm air or is
the heated air lukewarm?

Mark

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Eric Phillips
Sent: Wednesday, December 17, 2008 2:34 PM
To: s-car-list at audifans.com
Subject: [s-cars] Not exactly S-car-related, but very Audi...

Patient:  1991 90q20V Sedan, hereafter called "Lago".

Problem:  Coolant heats slowly in comparison to S-car and wife's 2.8L
V6 Audi motor, but does finally get to temp.  BUT, gauge reading is
dependent upon driving conditions - on the highway, the gauge barely
comes over the thin mark before the fat mark that is generally
considered "operating temperature" by any Audi owner.  Sometimes it
hangs out below that thin mark.  In town, the gauge hangs out between
that thin mark and the fat (normal temp) mark.

My first thought was a stuck open t-stat.  Replaced it with a good
(tested in a pan of water on the stove) 87-degree t-stat, and guess
what?

Same behavior.  Lago is sick, and I don't know the cure.

I surely have done SOMETHING wrong.  But what?  I seek the wisdom of
other 5-cyl, 20V DIY greasemonkeys...

Eric
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