I have a 91 Accord Wagon and i just got a used auto tranny installed and its been riding fine but after about a month it fucking up and not it doesnt want to shift into 4th gear 4 some reason im guessing on the ecu 4 the tranny might be bad but im not sure just wanted 2 c if anybody has ran into problems like that before would know what it could be....hit me up anybody if u know what my problem is....