What Is The Difference Between A Upstream And A Downstream Oxygen Sensor And How Many Does A 96 Chrysler LHS
Posted in Oxygen Sensors | Asked on Sep 7, 2010
Have? If more then one do I have to replace them all. If not how do I know which one to replace? Please help!
There are 2 Answers for "What Is The Difference Between A Upstream And A Downstream Oxygen Sensor And How Many Does A 96 Chrysler LHS"
Depends what, if any, codes your computer is throwing out.
Upstream O2 sensors are located before the catalytic converter, downstream are located after. Your 96 probably has 4 sensors.
Generally, the upstream sensors fail before the downstream, and cause more havoc. Replacing only the upstream sensors is normal. When the downstream sensors fail, all you usually get is a code saying the catalytic isn’t working.
Upstream O2 sensors are before the catalytic converter, downstream are after it. You should replace all at the same time if your getting a code for bad O2 sensors. You car should have 3 or 4 sensors.