The other day i was driving and my service engine soon light came on so i took it and went and got it checked and it said i have a bad o2 sensor, i went to class went back out to my car cranked it and the light went off. Well yesterday i was driving my car and didn't run anything over and i herd a dragging noise coming from the front right of my car so i pulled over and there wasn't anything dragging. I was starting to think that i had no oil but that didn't make since since i had a oil change the other day so i checked it and it was full so i drove the car home turned it off for 10 min cranked it and the noise went away. any idea what could be the problem? my service engine soon light hasn't come back on could this have something to do with why my light popped on the other day? all i have on the car is a Buschur Racing TBE with high flow cat. thanks for the help guys!

 

Did the sound only happen when driving? If so, a rock could have become stuck in the brake/rotor.

Front or rear 02 sensor? A HFC will throw a rear cat code - simple mechanical 02 fix will take car of that.

 

I went to like 3 places n they couldn't tell me if it was front or rear. I'm thinking its the cat because the light is off now.
The dragging noise was at idol too.

 

Autozone... get them to read the stored codes and see which O2 sensor it is bank 1 (front) or bank 2 (rear)

 

Yeah the thing said bank 1. So is the front one. The guy at autozone didn't know but thanks for clearing that up for me.

 

What was the code? There is only 1 bank, so it will be sensor 1 or 2.