Hi, I need your help badly. I have taken the car to various mechanics and they can't find a problem, nothing comes up on the computer. The problem is that when I am driving at over 50 MPH and I lightly step on the gas pedal, the car hesitates/transmission slips/doesn't engage. This problem occurs only if I lightly step on the pedal (under 2000 RPM). If instead I step hard and the RPMs go over 2500 then the problem is not noticeable, it goes away. This only happens on the highway and is very strange. I have tried explaining to a few mechanics already and they give me different answers and face. Any help is appreciated. The car is a 2002 with 160,000 miles. The transmission was replaced about 2 years ago along with the fuel pump.