man sorry to be the one to tell ya this but your tranny is more than likely gone. maby you got lucky and just burnt up the pump but it sounds likt to me that you burnt up the clutches too. or if your really lucky and the dsm gods are on your side it just went into limp mode.

if its in limp mode just reste the tcu (transmission controll unit) by removeing the negative cable on your battery for 45 seconds and it should reset the tcu and the ecu. your car wont idle worth a shit for about a hour becuse it has to learn all the perameters again. if that doesnt work them my guess is that your tranny is burnt up. im going through similar probs but i know mines burnt up. thats a whole diff story tho.

look around for a rebuild ive been quoted ay where from 500-1800 for a rebuild. you can get a used a604 from a junk yard for anywhere between 300 and 1000 and it may not last long i would go with the rebuild cues u get a warenty and all

what ever you do just make sure the level is perfectly correct the a604 hates too little or to much and heat is our #1 enemy. while your at it install a remote filter and a cooler best 150 bucks you will ever spend.

if im wrong about anythign feel free to correst me