Well for the past week or 2 my motors been running real bad, stumbling, worse gas mileage ect and sometimes it throws the 0141 engine code which is O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2), now is this the sensor in the header or in the cat that needs changed?
that's the cat o2 sensor, but that shouldn't cause your car to run that way. you might have a bad cat as well.
Desert Tuners
“When you come across a big kettle of crazy, it’s best not to stir it.”
well, i have a gutted cat (shell is on to pass state inspection) and i've been running a gutted cat for over 2 years and all a sudden im getting the 141 light....