Stumbles when accelerating and speed odometer jumps

[mz320506]

2001 focus sohc, stumbles when accelerating and speed odometer jump erratically. Idles perfectly, cruise at speed limit perfectly. Just can't accelerate. No check engine light, no dtc codes. Has new o2 sensors, airflow sensor, throttle position sensor, speed sensor. Anyone have a clue of possible cause. Thank you in advance.