I have a 2003 Chevy Monte Carlo SS, 3.8L V6. I recently changed the throttle position sensor on the car because of a code I was receiving (I don't remember the code). I'm now receiving another code. It's P0122, my scanner said it was the "Throttle Panel Position Sensor". But under the list of codes, that reads: DTC P0122 Throttle Position (TP) Sensor Circuit Low Voltage.

The car drives fine under regular driving, cruising and normal acceleration. But under hard acceleration the engine bogs down and I get nothing. No revs, no acceleration. I also noticed if I throw the trans into neutral, I can rev hard without any issues.

Please let me know if you guys can help. Thank you.

 

fuel pump?

 

Clean the MAF, but if you cleared codes and that one came up, you may have gotten a bad TPS. Check all the wires going to the TPS.

 

I'll clean the MAF sensor but that really should bog down the car. I guess there is the possibility I have a faulty TPS. If there are any other ideas, please let me know.

 

Fuel Filter, Catalytic Converter come to mind

 

Check the IAC also...