Mike Miller mikemilr at
Fri Feb 8 18:34:26 PST 2008

Is the oil temp also low?

As I recall, Audi Thermostats are 80 and 87 deg C

Like Peter suggested - heater control valve? Easy to bypass. Use a 4-5 inch long 3/4in pipe nipple (99cents at home depot) and two hose clamps. It's good to carry one anyways if (when) the heater control valve eventually fails. 


----- Original Message ----- 
From: michael 
To: 200q20v at 
Sent: Friday, February 08, 2008 9:49 AM
Subject: Re: thermostat

There has been a thread on thermostats already some time ago.
I have had a cold running car for a few Winters.  I replaced the  
thermostat a couple of times with no change.  (It was not the sensor,  
the air from the vents was cold.)
I tried it again this Winter with no change.  I purchased an after  
market 192º thermostat and it solved (?) the problem.  The only  
thermostat sold by Audi for this car must be a cooler one.
Until last night.
On a 12 mile trip, the coolant was cool.
On the return 12 mile trip after sitting for one hour, the coolant  
was normal.

What am I missing here?
- Michael

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