Help!

[drpolm]

I have a question again, and I am hoping that ya'll are able to help me. I have a 2001 4WD automatic Kia Sportage. Lately when I accelerate from a stop, the car shudders a bit before going, almost like it doesn't want to go. Today, I noticed when getting onto the highway, it seem to shift harder than normal. I checked the transmission fluid, and all seems to be okay with it. I am going to do a cleaning this weekend, and change the transmission fluid, as well as check into the spark plugs and such. Does anyone have any idea what the problem could be, and if doing these things would help it? Or if I should plan on doing anything else..

Thanks!
Doug

[kiaracer]

what's the mileage? and what color was your transmission fluid when you checked it?

[drpolm]

119k miles.

[purple571]

you might want to change or re-gap the plugs and possibly change the transmission fluid and filter.

[drpolm]

hello, I was wondering if any one could post me some instructions on how to change a transmission filter.
Thanks for all your help!

Doug

[drpolm]

The transmission has taken on a mind of its own now. It occasionally downshifting when it doesn't need to, and It seems to be having troubles shifting when I get around 55 mph or higher, running up around 3000rpms for a while, before deciding to kick in and shift. Have checked the fluid levels again, going outside now to change the fluid, but was wondering again, how to change the transmission filter.
Thanks