1994 GrandJeep Cher. limited losing power

[iyshelley]

I just had the converted and muffler and pipes changed 2 days ago. One am I am driving to work and the car starts to lose power. I push on the gas and it does not regain power so I just put along then it starts to pick up again it does that for like the last 20 minutes of my drive. Help me what can that be? I have also changed the O2 sensor also 2days ago. The battery is brand new like a month old. Thank you in advance for your help and input.

[dksob81]

Possible TPS (Throttle Position Sensor) might be going bad. The NO RESPONSE from pedal is a classic sign of a bad TPS.