Acceleration problems, what could the problem be?

What is your question?

No problems with engine starting, ideling, rpm, or stalling. Trans shifts correctly, reverse gear ok. After starting and placeing trans in D virtuly no acceleration movement unless the accelerator pedal is depressed almost comlpetely and then speed is slow untill pedal is completely depressed and then it takes off rapidly. Engine service soon light illuminates, crankshaft sensor and start control moduel replaced. No take off speed initially, I am baffeled.