Thread: car running really rich

So awhile back i got an 02 sensor code, its the 02 thats accessed from under the hood...i didnt too much worry about it because im eventually gonna get headers. recently the car has started running really rich to the point of when i go WOT the whole cabin stinks of unburned fuel. Would a bad 02 cause this or do i have a problem elsewhere?

if the o2 is bad it will run rich. my extension harnes got burned one time and the car ran very rich. might wanna get it fixed soon.

Yeah the 02 sensor tells it what to put it for fuel. So if it is messed up you fueling will go to hell.

that it will. i got my leak fixed last week (right by the o2 sensor) and gas milage was ALOT better, car ran better, and it was noticable faster. but i blew the gasket back out, gotta wait till next week now.

So could this be the cause of mine running rich as well then? deleted the cat so the SES light is on.. new o2 sim on the way

Yeah the computer is trying to test the cat buy adding extra fuel to see if the cat is responding.

guess ill get it fixed asap... the smell is killing me. It wasnt bad right after the code popped up... just continually getting worse.