[SHOBOYV1]

my 93 taurus sho transmission bucks and jerks violently when it is plugged into the ecm and is undrivable unless i unplug the connector out of the top of the transmission and then i only get gears 1&2 and reverse.i have to switch gears manualy and i am wondering if anyone has expeirienced this before.i really cant afford to take it to a tranny shop.any help is apprieciated.i have been told that my ecm is bad and that is not sending the right amount of voltage to the tranny.it is sending a 1/2 volt reference and i am told that it requires a 5 volt reference?this is what the guy i bought the car from has told me but i am clueless.please help

 

[bertha66]

You can take it to a place like AAMCO, they will check it out for free and let you know what kind of problem you maybe having. Call them and see if they do it for free brfore you go there.

 

[Cuda_jim]

my 93 taurus sho transmission bucks and jerks violently when it is plugged into the ecm and is undrivable unless i unplug the connector out of the top of the transmission and then i only get gears 1&2 and reverse.i have to switch gears manualy and i am wondering if anyone has expeirienced this before.i really cant afford to take it to a tranny shop.any help is apprieciated.i have been told that my ecm is bad and that is not sending the right amount of voltage to the tranny.it is sending a 1/2 volt reference and i am told that it requires a 5 volt reference?this is what the guy i bought the car from has told me but i am clueless.please help

You need a 5V going to the trans sensors. It could be the PCM or the wiring. There is no easy fix unless you have exceptional diagnostic skills and the necessary equipment. Sorry for the bad news, hope someone else has better idea.

 

[MTX_SHO]

hop on SHOforum.com there are some guys who are amazing at auto tranny stuff.. I would say it is a ccrm issue tho..