tramsmission jerks

[Oberrod]

Hi,
My transmission (i think its a TF999) jerks extremly when i give a little more gas, when i give no gas it drives normal with the standing gas.
 i give him new filter and oil but it dont stop.

[eaglebeek]

I have a bunch of questions. Maybe your answers will help me or someone else figure out what's going on:
1) What did the old fluid look like? Was it dark-colored? Did it smell burnt? Did the fluid look like water was mixed with it?
2) When you took the pan off did you find any large chunks in the bottom? In some pans there's a small donut-shaped magnet in the bottom of the pan. Were there any large particles of metal stuck to the magnet? Some small particles in the bottom of the pan or on the filter are to be expected and are not necessarily a sign of impending transmission failure.
3) When you were under the car did you see if the throttle linkage was hooked to the lever on the transmission?

[Nightpath]

What happens when you put it into reverse?

1 of 2 things I can think of :

If it jerks when going into reverse it's probably just ujoints.

If it jerks when you step on the gas from not being on the gas, chances are the rod assembly that connects your gas pedal to the carb is loose. It's not like a newer vehicle that either uses electronics to handle it, nor a retention held wire.

[1985amceagle]

when the transmission jerks, does the engine rpm kick up heavily as well, like it dropped down a gear?

[IowaEagle]

Great questions for him.  Any fluid leaks?

[carnuck]

Oberrod. If English is hard for you, I may be able to translate. I use https://translate.google.com/ to get the basics if I don't know it. "Fortunately" for me, I grew up in Canada and learned English and Russian first (to communicate with my grandmother. I haven't spoken it since first grade and never learned to read it.) which I was told was Dutch (due to anti-communist sentiments back then) then French and low German. In high school and after I learned some Hindi and recent years I learned enough Spanish to talk cars with some friends in Mexico and sell parts to Hispanic customers.

[Oberrod]

the transmission have now stop jerks, i dont know why.

[carnuck]

They do that if it wasn't driven for a long time, then now it is. Takes awhile for things to re-break in.