[s-cars] Coolant temperature questions
kday at ultrameta.org
Mon Apr 26 10:03:41 EDT 2004
Here's a puzzle: why does the engine temp as reported by the CC drop by
5 or 6 degrees in 20 seconds when I turn the heater off?
I saw similar temps on my commute this morning (20 miles of highway) as
I did before I started noticing a drop a few weeks ago -- 88C steady at
speed, peaking to 92 stopped. But then I noticed that if I turned the
heat off, the temps dropped rapidly. This seems like a small time
constant for anything to cool off -- any ideas?
It's repeatable -- if I turn the heater on again, the temp rises to 92,
off again it drops to 87 rapidly.
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