ok so i have just put in a new tranny in the car ive had the car back maybe a month and now just all of a sudden i was driving to work and im stuck in traffic when all of a sudden the RPMs start increasing as if im accelerating... i mean im braking and the car is taking off... so i get off the freeway and shut the car off asap.. i try to turn the car on again and the RPMs Jump as if i have my foot on the accelerator... the throttle cable seems fine so does the pedal wth could it be?? I NEED HELP ASAP!

btw i had cleaned the throttle maybe about 3 months or 2 months back