98 GSX auto issues

IF I HAVE ALREADY POSTED THIS I APOLOGIZE! I’M ON SO MANY FORUMS I FORGET WHAT I DO AND WHAT I DONT DO.

98 Eclipse GSX
6 bolt swapped with evo3 16g
auto with ipt/kiggly adapter kit

ill describe the situation the best i can

on a cold start i go up fire it up if i dont let it warm up (less than 5 minutes!) and i put it down into reverse or in gear it wont go anywhere. it will act like its in neutral.

if i fire it up wait 5 minutes or so go out there and put it in R or D I have gears! so I reverse out of my driveway, drive approx 500 feet or so to a stop sign stop and the rpms stay up around 1200 like its in N and I cant go anywhere. I have to shut it off wait 30-60 sec and then fire it back up and then it will go and wont do that again.

now after of an hour or so of city driving when i start slowing down and it starts down shifting it grabs really hard and throws it down to a stop…it will get so bad that after i stop and start to go again i put it to the floor and it will barely move. it only does that after a lot of stop and go traffic!

on the freeway it runs fine. i drove it 4 hours on the freeway and it runs fine. just in city traffic it acts up. now after i drive on the freeway and come to city driving it acts up like i said.

it will only let me power/boost brake up to 1500rpm
when the car was running great and was stock it let me power brake up to 2500 rpm and then the brakes started giving out on a t25

the fluid is fine. i just replaced it the fluid and the filter less than 1000 miles ago. the magnets had some gunk on it but they werent looking like mushroom or covered.

I am throwing a couple codes, IAC, TPS. I dont know if that will have anything to do with it. but i havent had the tranny scanned to see if it might be throwing codes also

http://www.pittspeed.com/forums/showthread.php?t=34079

nope that was another problem. with 3 sensors and didnt know if i needed 1g or 2g. i got that figured out i ordered my sensors. now i need this issue diagnoised and fingered out

new car?

same car. i didnt know what sensors i needed since the motor is a 91 and the car is a 98 i didnt know if i needed 91 or 98 or a combo of both. and what people have been telling me that the sensors might be causing the issues i listed in the first post. but ive been having this issue before i knew my sensors were bad. so im looking for any input from anyone who might know what could be the issue. if its not the sensors then what coudl it be…end clutches? valve body? torque converter? etc etc

no. i ment get a new car