Reading the post about a Ram's high idle reminded me of one of my Dak's
little foibles (2001 Dakota, 4x4, 4.7l v8):

When the weather is cooler - I used to think "when it's in the 60s" but
that doesn't happen here - when I first start the truck and drive off,
when I shift from first to second, it sounds like the engine fan revs
high, holds at that speed a few seconds, then drops off to normal(used
to think it was the engine).  Same thing, sometimes, second to third.
Soon as the truck warms up a bit, this stops.

Doesn't seem to do this in really cold weather, or warmer weather, just
in this middle weather where it's cool, but not cold, in the morning.

Is this normal?  I'd say it's not a problem, since it's been going on
for nearly 6 years now.  Just curious as to why this is happening.

jmc