Probably your alternator belt. When its cold it doesn't flex as easily
and hence is probably spinning a bit at the crank. You can tighten it
up a bit, but if you tighten it too much you risk damaging the
alternator bearing.

I've often wondered if I could sand (roughen) the pulley a bit to
provide better grip. Never done it...just one of many round tuits...

On Friday, December 20, 2002, at 11:06  AM, Andrew Fox wrote:

> On a cold day when i start my van (86 auto tranny) i hear a high
> pitched
> squeal for a few seconds or longer depending on how cold it is.