Hi boys and girls!

        I'm having a problem with my 84 Vanagon (auto trans) shifting
when it is stone cold, (IE: every morning). If I don't warm up the
engine, and take off right away, the tranny won't shift out of 1st gear.
I have to pull over and let it idle for about 5 mins. and then it will
shift fine all day as long as the engine doesn't totally cool off.
However, if I start the engine and let it warm for about 5 mins and then
take off, it shifts just fine. I have checked the ATF and it is right up
to the full mark. Could it be a clogging filter screen or is there some
sort of vacume modulator on this trans. Maybe I'm way off base. Anyway,
I sure would appreciate any advise anyone out there in Vanagonia may
have to offer, as  it is getting colder and it seems the colder it gets,
the longer I have to warm it up before it will shift into second gear.

        Thanks for your help kids.