I can't seem to figure out whats wrong with my transmission. The car is a 98 accord with a manual converted from an auto. After I drive the car for a long period of time the car would begin slipping. The clutch was just changed so I don't think that's the problem. It was doing the same thing before I changed the clutch, I though it was the clutch so I changed it but that didn't solve the problem. After I drive for a while whenever I shift from any gear the RPM would jump up when I press the gas but the car moves slowly, then the RPM comes back down and the car would speed up with the RPM. Does anyone know what could be causing this.