it's a throttle valve cable. the FSM procedure that i already told you how to get to is the way to do it. the bands are inside the transmission.
you say you dont know anything about automotive but you have come to the conclusion that you dont think
you need to change the transmission fluid, though I already gave you a suggestion on you what you need to do to get to a point where you can determine the mechanical condition of the transmission. You apparently dont know how to listen or want a magic answer. belts, tevin cable??
First off, adjust the TV cable exactly the way it says here
. Do not vary, do not deviate because you think
it could get you to where you need to be.
If that doesnt help, dont readjust it.
Fluid change and band adjustment are next. one of the bands is accessible from the outside of the transmission and the other from the inside. do not attempt to adjust the bands until you have seen what's in the pan. so if you adjust the bands you will have drain some of the precious old wore out fluid that you think
is keeping your transmission going.
i'm not going to bother typing anything else until you think
this is what you need to do.