transmission issue
 

i gotta 02 saturn sl1 with bout 86k miles on her, here lately its ben hesitating for a few seconds when it enters into reverse and some times over rever to about 3200 and hesitates till it reaches 3200rpm and always does it when entering overdrive/4th gear i did the plugs and wires, could it need a trans fluid change? or something else?

I'd start with a fluid and filter change. If not, it may be time to replace the valve body. I just did this to mine and it's like a totally different transmission now.

A bit of service to the transmission seems in order ...

how much would a valve body cost? where can i get one and are they easy to replace? id rather have a new or a rebuilt one, i dont wanna used one lol

I found mine on ebay for $110. I have posted 2 links for you to watch. Keep in mind that if you have ABS brakes, you'll have to take the master cylinder loose from the power brake booster in order to get enough clearance to get the pan off. And the pan has a gasket that's a dealer item only. It cost me around $21.00 with tax. Have fun. Watch these videos in order. It will take about a half hour to watch them both, but, it's worth the time. You will also need an inch pound torque wrench.

i fount a rebuit valve body on ebay for 120 and the cover gasket for 18 on ebay too, should i plan on replacing this part?

also would it just be a good idea to do a co version to 5 speed? there is like 6 sl2s at my local salvage yard that are standard

You might try taking it to a transmission shop first and asking them to check the CVI (clutch volume index) and make sure they're in parameter. If so, you might go ahead and replace the valve body and gasket. BUT, if you're not mechanically inclined, I'd suggest you have someone do it for you. Same goes for a conversion. I'm sure you'd need various sensors and wiring harnesses off the donor car too. And you'll have to get the clutch pedal set up too. That's minimal stuff. Do a search here and you'll probably find where someone has done a conversion.

Well, those are definitely interesting videos ....

Too bad the videos are on a non ABS car, Mike. That adds a challenge to the task. If not for the ABS pump, etc. it would have been a hell of a lot easier for me. I could probably do one on a non ABS car in a couple of hours now!