Kouki1998

yesterday i had added a quart of gear oil to my ka24de transmission and while driving the car shut down on me. I had not lost electrical power, it was more mechanical failure. I then proceed to drain the transmission to find it full of black burnt gear oil. I then refilled the trans but now my car wont run for more than a couple minutes.. so i am wondering if this is a result of overfilling the transmission? Any help is appreciated!! I need to get my car running asap because this is my daily and I am left with no car now..