Failed smog test. I had 3 things that were way above average. Nox, Co2, and something else i forgot what its called. Replaced fried Egr. Now it failed 5 things. Mechanic said its probably my Cat. Everyday it throws a code 32. It the problem my O2 sensor? My car runs like crap lately too. It starts up funny, its a gas hog now, and it just doesn'y feel right . Any advise would be greatly appreciated.

 

Well try these

tune up
PCV valve
new cat
oil change
new O2 senser


Thats the basic stuff

go though all the plugs in the engine bay maybe some thing got loose

 

My plugs havent been changed in a while. I never changed the o2 sensor or the Pvc. I just replaced the Cat about 3 years ago. If it was bad wouldn't i notice horsepower loss? Oil change yep i think im due.Thanks for the info.