My car started running weird this morning. I had been driving with a CEL light for awhile. The CEL is because when the muffler shop made my exhaust they put the rear O2 sensor in front of the cat. So, last night I reset it and went into the house. This morning it was running fine for about 10 minutes, then the CEL came on and the car would sputter when I pressed about 3/4 on the throttle. After the sputtering the CEL would flash a few times, then go out. I looked at me A/F gauge and it was sitting all the way on lean. When I would give it 3/4 throttle and while sputtering the A/F would read ritch. I think maybe my O2 is bad now. It's still too early for Autozone to be open so I can get the codes read. What do you think it is?

 

narrowband or wideband A/F? Was it rather cold this morning?

 

how cold can it be in Florida? They might have hit freezing... but really, how was it after it warmed up?

 

I have a Faze A/F Meter, Narrowband's the cheap ones right? laugh.gif:

Actually it was right above freezing this morning. What made me wonder though was that the A/F wasn't scanning like it normally does. However, when I got to work I shut the car off and restarted it the A/F started scanning like normal.

 

i would check to make sure there are no leaks in your intake first(easiest), then in your exhaust.

 

Well it ran fine on the way home from work. I'm guessing it's cause I didn't warm it up this morning. I still need to get a new exhaust though, cat's definately gone bad(again!).