2002 pontiac grand am gt loose power

[lajoya87]

My 2002 pontiac grand am gt I change the fuel pump ,Canister Purge Valve, Idle Air Control Valve ,Fuel filter, air filter ,camshaft position sensor ,temperature senson
And still feel like loosing power when you accelerate could it be a clogg catalytic converter?

 

[melsg5]

didnt you post previously with a code for a bad knock sensor? did you replace the sensor?

 

[lajoya87]

Yes but I have that code for 4years and never change the knock sensor

 

[melsg5]

why would you change all the other parts you listed above and not follow up on the problem that the cars computer is telling you to correct?