If you fluid it to low it could cause it. Check it while the car is warm to get the best reading. ** Already checked the fluid, it's fine. I'm wondering about the torque converter because it seems to only do it at the bottom end of a gear, almost like it's having trouble deciding what gear to be in and the engine RPM's jump back and forth about 250-500rpm while it's doing it.
your transmission is most likely bad if it an automatic but if it a manual then your clutch could be bad
You can't shift gears on an automatic transmission because, as it is called, it's automatic! You don't need to shift, it does it for you. == == Maybe the question should be "Why is my automatic transmission not shifting through gears for me as it should?" Could it be a fairly simlpe fix or am I losing my transmission? Yeah Dopey!
Automatic transmission fluid would likely cause a standard transmission to overheat and wear the gears at a high rate.
could it be low fluid
if it is automatic the transmission could be slipping if manual the throttle could be sticking
There are multiple things that could cause this problem, but if everything else seems to work fine, a good place to check would be the transmission and the shifter. Gears in the transmission could be blown and may not catch when you try to shift.
You have to shift gears in all of them, so you'd call them "manual," but in 1969 you could get an "autostick" transmission that had an automatic clutch connected to a manual transmission.
The "lockup torque converter" could be engaging too soon. Take it to a transmission shop to have it diagnosed.
Low transmission fluid, transmission on it's way out.
yes it would cause the gears to slip more or less
Could possibly be shifting gears sporadically or your driving on hilly terrain.
i think the energy (fuel) is more consumed in automatic shifting of gears whereas the same is done manually.. this could only be the reason..