my 94 rodeo is surging and this is causing the engine to run hot i've chked so many things i don't know were to start.the engine light comes on when i accelarate and off when i decelarate almost ten years and no major problems except to change the clucth recently and the timing belt and regular tune-ups .CAN SOMEONE PEASE HELP I WONT GIVE UP ON MY TRUCK .THANKS