!1991 vert auto 81k ---dog on performance---but when I try to get it to acceleratre and auto down shift it sounds like an out of control pop corn machine from down below. This tranny did eat a race a while back and it was replaced but not flushed out again since.

yuck... whenever something breaks like that inside a transmission, I worry about clutch faces...

I would power flush, change the filter and see what happens.

That's exactly what I was thinking---worth a shot I guess thanks

First thing id be doing is getting the fluid and filter out of it, THEN id be opening that filter up to see what you have inside. From that, youll be better able to make a judgement.

Well, had the full flush done at jiffy---smells better--fluid that is. Initially, more popcorn sounds than before will continue to evaluate and see if anything improves---any chance of the rattle noise being an exhaust tube from the air pump or something like that???

Did you personally inspect the inside of the filter? That is the most important thing you shouldve done.

Didn't check filter because Jiffy back flushed without touching anything. Since initial drive---car is running better and less popcorn noise at lower RPMs. There is no doubt that there was residual metal from previous problem in the fluid. Hopefully there is less now.