Well it (84 -12A) used to run bad on damp wet days stalling rough idle then all of a sudden it be fine like nothing happend. Most poeple on here said electrical. BUT I did not touch the electrical but found out that my coasting valve was shot and creating a vacuum leak. So plugged it off and today wet ,damp miseable day car ran like nothing was wrong. Just thought I would pass it along.

 

Do you have your hot air cleaner pipe on don't you? If not, you'll get icying goin on. Part throttling causes vacuum and makes the mixture into a refrigrant. Also, varing the throttle a lot on those days will keep it from icying as much.


OR maybe you got water getting on wires somewhere?

 

Yippee!