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Old 09-14-2018, 07:14 PM   #7
Board Member
Join Date: Oct 2008
Location: SoCal

ECU will not attempt checking for misfire (won't run that monitor) if there are other problems that it already detected. Once it knows that all fuel and ignition parameters are good then it will do the misfire count. If the count is above certain threshold which may be dangerous to the Cat than the CEL will flash instead of just being ON.
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