I have a 90 240sx se its an automatic .. Well the ecu that came with the car went bad it was sending a constant 6v to the number one injector and was just dumping fuel in.. Well we switched the ecu with one from a manuel car but now i dont got overdrive and now my transmission slips through all gears... So my question is Does the manuel ecu work in a automatic car?? or is it my transmision that just needs to be changed???

Any help is appreciated ...

 

i know you can put the auto ecu in a manual car but i don't think it can go the other way. I don't know if the ecu controls the transmission or if it has its own control unit. if the ecu does control it then it doesn't know to tell the transmission how to shift properly.

 

I'm going to do a manuel swap either way but I need this car to run right cuz its my daily driver and can't afford it so I wanted to know if it was just the ecu

 

you cant run that in a auto... the auto ecu sends signals to change gears.. you can run auto in manual though.

 

No
you need to put an automatic ecu in asap

 

Well i have a automatic ecu in there now but it is my tranny slipping pretty bad through all first to third and never shifts after that ..... How can i tell if the ecu is a automatic one??? for the single cam

 

it says AT on it with a number

 

well idk because all the stickers were removed off it so idk if it is a auto or manuel but it still drives the same as if a manuel ecu still in the car.... So idk if its the tranny.... any suggestions

 

Try a different ecu and walla, you have your answer.

 

from what I have seen if the tranny slips it is bad. all the ecu does for the tranny is tells the tranny when to shift. the problem could be hydraulic, a clutch pack or a band. a lot of things can go wrong with a tranny. I say the ecu isnt your problem, its the tranny. however you never know try putting the proper ecu in the car.