i have a question for someone knowledged with 92 EGRless bonne'*
early this spring i replaced the tranny for a rebuilt one and it was fine on trips during the cooler spring months but i notice know that on days over 75F and i drive more then an hour that my car jerks around and wont shift up to the next gear. ussually it doesnt act up until i try to push it up to 3000RPMs or more but it does get annoying when i cant accel due to my car acting like that
is this a tranny problem or is it posiblly a engine issue and would trans cool additives help at all
i need to know so i can fix it before it becomes more

p.*. its the 2.83 tranny 4T60E not HD

2.83? Was that your STOCK ratio? If not, that'* at least part of your problem.

We need to know that before going further. Your PCM needs to know WHEN to shift it.

Otherwise, have it flushed professionally.

yes my ratio is the 2.83 ratio not the 3.06 or the 2.97 that the SC has it was professionally changed about 7000 miles ago and it still acts up it only happens on days over 75 and as the air temp goes up the faster i noticve the problem
my engine runs around 200 (not sure if thats normal or not for EGRless engines)so heat transfer might be happening im not sure i figured i ask around and see if anyone might know why this is happening and posible cures to fix it
i also have no check engine light on all is clear on the comp.

Could this be the dreaded "chuggle" between 45-50 mph under load?
If so there is an entire (long) thread devoted to it.

If you have a code stored or a light, use the procedure in Techinfo to pull the code and tell us what it is.

Chuggle should not be there with a rebuilt trans assuming an updated valvebody was installed.

If your previous trans produced debris, it may have clogged the very restricted OEM core in the trans, and you don't have any means of cooling your trans. Your year won't report a trans temp through the PCM, but I'm betting that trans is cooking, causing your engine to heat up. Only a trans temp gauge would confirm this.

My trans shop is fully bypassing my radiator core and installing a gigantic thermostat controlled cooler in it'* place for this very reason.

well i am not recieveing any codes at all and i have never got one about the trans

i recently check if the fluid is transfering through the radiator and it is from trans to radiator radiator to trans all flows well
so im lost on wut it might be
i did a tranny flush yesterday at work so fluid is clean and the 7000 mile fluid weasnt dirty at all
would trans cool additive help or hurt it more

Get it diagnosed by a trans shop first. No sense in throwing money at it until you KNOW what it is.