>>hello everyone, here's my problem of this week (81 adventurewagen):
>>
>>a chirping noise, only when engine has warmed (after driving a few
>>minutes).  the noise is most apparent at lower rpms in 1st and 2nd, but i
>>can sometimes hear it in 3rd and at higher rpms in 1st and 2nd. i have not
>>heard it in 4th.

snip

How about:

1.  No grease on distributor cam lobes?

2.  Worn/loose alternator belt?

Cheese