TAKE A VERY CLOSE LOOK AT THE OLD INJ PUMP,AND LOOK FOR A TPS SENSOR THAT MAY HAVE A DUAL FEED SET OF WIRES COMING FROM IT , WHAT IS HAPPENING IS THE TRANS IS NOT GETTING AN UPSHIFT SIGNAL FROM THE SENSOR USUALLLY MOUNTED ON THE POINT WHERE THE THROTTLE ATTACHES , EVN THOUGH THE HARNESS MATCHES UP , I BET THE ENG YOU USED CAME FROM A MANUAL TRANS VEH, SAME THING HAPPENS IN THE U.S. THE TPS SENSOR HAS ONE SET OF TERMINALS FOR THE ENG AND ANOTHER SET USUALLY A LONGER STAND ALONE WIRE WITH 3=4 WIRES GOING INTO ANOTHER PART OF THE HARNESS , WITH OUT THIS SIGNAL THE TRANS WILL GO ALL THE WAY TO THE POINT THAT THE ECM WILL OVERIDE THE ABSENT SIGNAL AND MAKE THE TRANS SHIFT RIGHT AROUND 5000 RPM IN A GAS VERSION, AND THE REASON IT IS NOT GOING INTO OVERDRIVE YOU JUST HAVE TO GO A LOT FASTER TO FORCE IT TO MAKE THE SHIFTS, NOT RECCOMMENDED TO DO.. TRACK DOWN THE SENSOR LOCATION A ND MAKE CERTAIN IT IS HOOKED UP CORRECTLY AND I THINK YOU WILL FIND YOUR PROB.. JERRY