New injector pump, automatic tranny. when driving down road it will act like I just let off the Acceleration peddle for second...and pushed it back down... but Im holding foot steady... ! (off and on.. ) It wont do it every time. but gets old when I'm pulling my dump trailer trying to go up a long hill and it lets up.. I have installed 2 different Throttle Sensors in it and set to 55 volts.. It seems like the first one I installed it quit for a couple of weeks only too return.. I also bought a new Map Sensor ,and a Camshaft Position Sensor any thoughts ? thanks

 

Start cleaning connectors and grounds.