![]() 11 and later sensors are heated and are front and rear, but I think earlier are interchangeable. I think he said that they changed the ECM and the sensor in the first post, but he could give it a shot on his year. You wont be able to tell on your own with out dealer equipment for that, but you can look at your plugs and in your cylinders for signs that thay cylinder has an issue ![]() If its constantly rich, then the voltage will be high and if you watch the closed loop integrators it will prove that it is by being less than 100% most of the time, and if it has been for some time the adaptive fuel value will be compensating by adjusting fuel values. The only way to read what the cylinder is doing is to read the voltage from sensors. Personally I would verify the clean ground to the ECM thats black/green tracer, they are found loose alot at the chassis ground, and the battery cable loose at tranny case. ![]() You would be looking at terminal 7 grey at ecm that is the sensor ground, and terminal 17 grey at ecm H02 sensor imputs and terminals 3-4 at sensor In order for the ecm to throw a code voltage would be out of range or not receiving a signal at all.
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