Coolant temperature weirdness

Peter Schulz pcschulz at
Fri Mar 5 12:46:53 EST 2004


Ditto here...
seems to be a "slow " indication., about 1/4 on the highway, goes to 
"normal" in stop and the fan works when its supposed to.

thermostat was installed (new) as part of a timing belt job in Nov 2002 
during the TB job.


At 12:34 PM 3/5/2004, mallick at wrote:
>I thought I had this figured out, but the fix didn't work...
>My coolant temp seems to be a little sits below the first "fat" 
>mark on
>the temperature guage.  At highway speeds is drops even lower, to the next
>lower "slim" mark.  Sitting in traffic it will reach the fat mark and I can
>hear the fan cycle on and off.
>It sure looked like the thermostat was stuck open, so I had it replaced with a
>brand new 'stat (87C).  The old one looked fine.   The car still behaves the
>same way it did with the old 'stat.  I dunno.  Maybe MFTS flakiness??
>The only other change is that the water pump is brand new, done with the 
>change.  Coolant has been flushed and re-filled, to no effect (not that I
>thought it would).
>Any ideas?
>John Mallick
>175K and counting....
>200q20v mailing list
>200q20v at

Peter Schulz
1990 CQ (perpetually awaiting S2 3b engine transplant)
1991 200 20v TQW indigo mica
1991 200 20v TQW titanium grey
Chelmsford, MA USA
peter at  

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