Quote:
Originally posted by NISMOPower
We took it to a shop and they said that one of the three O2 sensors went out...Is that a possibility????
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Yes, you may have a bad Oxygen Sensor. No, that would not explain why the engine "just died" as you said in your first description of symptoms.
The Engine Control Module (the computer) relies on signals from the two front Oxygen Sensors to control the fuel mixture. The ECM continually monitors the signals from these sensors. If one of them "dies", the ECM does three things simultaneously ...
1) Turns on the Service Engine Soon light.
2) Stores one or more Diagnostic Trouble Codes for subsequent retrieval.
3) Commences to use a default signal value in place of the defective sensor's signal.
The default signal is never as accurate as the signal from a healthy sensor, but it is good enough to run the engine. Besides, one bad sensor affects only three cylinders, and the other three are running normally.
A bad Oxygen Sensor will not cause the engine to "die". There is more to this story.
Linear Mode
