Misfire questions
10-19-2020, 11:44 AM
#1
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Misfire questions
How does an Ecotec know it has misfired? Does it manage to sense and/or record every instance? At what point does it set P0300 or P0301-4. At what point does it light up the CEL. Is it possible to sense a misfire that isn’t real?
10-19-2020, 12:07 PM
#2
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AlGorerythms. Basically, it monitors the crankshaft looking for variances. A lot more complicated.
Misfires are not necessarily real misfires, one of the sensors involved is a microphone (knock sensor). P0300 does not mean "random" misfire, it means unidentified misfire. It usually takes 2 times before it identifies which cylinder.
Misfires are not necessarily real misfires, one of the sensors involved is a microphone (knock sensor). P0300 does not mean "random" misfire, it means unidentified misfire. It usually takes 2 times before it identifies which cylinder.
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