My 94/5 spd with 70,000 on a crate motor from ford is running terrible. Sometimes just cranks and won't start but will start if pushed and the clutch popped. When running the bottom half of RPM's are dead and it sounds like starving for fuel, then it will suddenly take off like passing gear and really rocks the motor. At WOT in 5th it has little to know power. Was running great. Washed it, parked it and now this. No, didn't get the ignition wet or anything like that. My thoughts are maybe the TPS. The vac/pres guage reads as it always has no matter what he engine is doing. I have checked for vac lines off and electrical connections that are not tight or connected. Nothing there. Need help desperately.