1997 Pontiac Sunfire "change oxygen sensor downstream" Questions

...reading of P0141? po141 code is downstream oxygen sensor heater or circuit fault. that should not keep it from starting cold...but cars are funny like that!! i would get that fixed and go from ...

...oxygen sensors and I have changed the one before the catalyst, how important is it to change the second one, the one after the catalyst? What function? In a vehicle's exhaust system, oxygen sensors ...

change the upstream oxygen sensor too? Hello! The defective ignition coil more than likely contaminated the downstream O2 sensor...If there isn't a trouble code and engine performs in a normal fashion

Oxygen Sensor Codes For Help With This Pontiac Trouble Code (check your oxygen sensor also called O2 sensor) All the codes you have listed come back and refer to the oxygen sensor. I would say that it

...Oxygen Sensor-I don't have a location of the Bank 2 sensor, so you'll have to guess on it by determining how many sensors you have by inspecting the exhaust system from the exhaust manifold down to ...

...oxygen sensors. Similar readings may indicate a failing converter. 3. Visual inspection: Look for physical damage like dents or cracks on the converters. 4. Temperature test: Measure converter ...

...change in fuel economy. if your downstream sensor is "toast" you may want to look into the catalic converter because if it is clogged or the honeycomb inside is damaged it can restrict airflow to the ...

...Oxygen Sensor (HO2S) signal response for a change in fuel trim corresponds to the correct engine bank. If a response from the Oxygen Sensor being tested is not indicated, a trouble code will be set ...

There are two oxygen sensors. Change the other one. Make sure you are installing the correct sensor in the correct location. One is before the cat the other is after the cat. (upstream and downstream

...change, if necessary. Use a floor jack and two jack stands to support it. 5 Remove the oxygen sensor using a box-end wrench or a ratchet and oxygen-sensor socket. Read more : ...