Can a catalytic converter be replaced without O2 sensor?
Can a catalytic converter be replaced without O2 sensor?
A replacement converter must be the same type as the original (two-way, three-way or three-way plus oxygen), EPA certified and certified as being OBD II compliant. O2 SENSOR DIAGNOSIS You may run into a situation where the catalyst monitor won’t run because there’s an O2 sensor code.
Can a bad spark plug cause a bad catalytic converter?
A fouled spark plug, bad plug wire or a bad coil on a DIS system causes ignition misfire that overloads the converter with fuel. A leaky exhaust valve can do the same thing, allowing unburned fuel to pass right through the engine without being ignited. Most converters are designed to operate at a temperature of 800 to 1600 degrees F.
Can a non fouler make a catalytic converter work?
Legend has it that if you use a spark plug non fouler you can trick your engine computer to think that everything is working fine. I decided to put this theory to the test on my 2003 kia sorento with a p0431 and you won’t believe the results!
How does the honeycomb work in a catalytic converter?
To work efficiently, a converter needs to capture and hold oxygen when the mixture is lean so it can burn the pollutants when the mixture is rich. A special “washcoat” of aluminum oxide on the honeycomb increases its surface area by a factor of almost 7,000 times, allowing it to trap and hold the extra oxygen.
How does the catalytic converter and oxygen sensor work?
If it sees that behavior, it knows the catalytic converter and the oxygen sensors are operating properly. However, if the oxygen sensor doesn’t switch rapidly during the test, the ECM will set a downstream O2 sensor trouble code.
What causes an O2 sensor to read a steady lean?
Here’s where you could have an O2 sensor related P0420 An exhaust system leak really screws up the P0420 testing routing. An exhaust leak near the upstream sensor can cause the downstream sensor to read a steady lean condition. The ECM would interpret that as a bad catalytic converter.
Why is the O2 sensor on my car not working?
The root cause can be unmetered air (air duct leak), dirty MAF sensor, vacuum leak or clogged fuel injector. A failing head gasket can force coolant into the combustion chamber, causing a rich condition in the exhaust and contamination of the O2 sensors.
Why is my catalytic converter reading lean 0.1v?
An exhaust system leak really screws up the P0420 testing routing. An exhaust leak near the upstream sensor can cause the downstream sensor to read a steady lean condition. The ECM would interpret that as a bad catalytic converter. In that case, your OBDII scanner should be reading a lean 0.1v reading from the downstream sensor.
Where are the back O2 sensors located on a car?
Back O2 sensors are located after the catalytic converter, a part that facilitates the conversion of pollutants in the exhaust to harmless by-products. These sensors monitor the efficiency of the converter.
Why is my OBD not working on my catalytic converter?
The OBD II system can’t evaluate the converter if the upstream and downstream O2 sensors are not functioning normally. So any O2 sensor problems have to be dealt with before you can use the OBD II system to diagnose the converter. O2 sensors typically fail because of old age or contamination.
When does a catalytic converter need to be replaced?
If the downstream O2 sensor activity mirrors the upstream O2 sensor, the converter is dead and needs to be replaced. On V6 and V8 applications with dual cat exhausts, you’ll have upstream O2 sensor readings for each side of the engine and downstream O2 sensor readings for each converter.
Where is the O2 sensor located?
Oxygen sensors O2 sensors will always be located in the exhaust system. Their function is to sense how much oxygen remains in the exhaust that is flowing out of the engine, and report that information to the vehicle’s engine control computer.
How can a bad oxygen sensor cause poor acceleration?
A bad oxygen sensor will make it hard for the ECU to adjust for the necessary amount of fuel during sudden acceleration. This can be because of the O2 sensor constantly running in “open loop mode”.
What is a Catalyst Code?
Catalyst Code is the first full-length book to examine the unique strategic problems faced by economic catalysts (or multi-sided platform businesses), enterprises that add value by facilitating interactions between two or more groups of customers who need each other in some way.
