I've been reading some threads in the archives regarding different
thermostat temps and the idea that it is possible to run a 2.1l (or any
engine) too cool. This morning's frigid temps and the lack of heat got me to
thinking about my impending emissions test. I will have to have the
emissions tested when there is a possibility for seriously cold weather.

Am I correct in thinking that a cold engine will necessarily run rich and
therefore cause potentially high emissions readings? Is it advisable to run
a different than stock thermostat in order to increase engine temp for
emissions testing?

Generally, my temp gauge never goes above the LED, even in summer. Today,
after twenty minutes in some stop-and-go, the needle never left the lowest
mark on the gauge.

--
mordo
1990 Carat