2000 Firebird V6 No Power
 

I really need some help from anyone. I have a 2000 v6 firebird that has NO Power and won't accelerate over 45 mph. Acts like a huge vacuum leak, but no leaks. I'm at a loss with this throttle system (wireless). Thanks
Mark Stephens

Check your catalytic converter. Just went through the same thing with my G6. No power and fell on its face. Idled smooth. No codes.

do you mean plugged or issue with post Catalytic Converter O2 sensor?

My cat was almost plugged up. it was running good one day and next it start losing power. Could not go over 40MPH. Idle was perfect. didnt matter how much gas I gave it it was just blah with any amount of throttle. No sulfer smell either. I replaced the cat myself and runs perfect now. there are some Youtube vids on how to test your converter.

Thank you very much.
regards
Mark

Thanks the catalytic converter is plugged.