Isn't misfire recognition supposed to be activated 100% of the time?
05-02-2007, 04:59 AM
#1
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Isn't misfire recognition supposed to be activated 100% of the time?
If not, what controls active status? Just curious why mine seems to be innactive all the time.
05-02-2007, 06:27 PM
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No, definitely not 100% of the time.
I don't know the exact circumstances under which misfire detection should be active and when it's allowed to be inactive. EPA rules come into play here.
But I do know that chip tuners have been known to tweak when it's active and when it's not..;-)
-Uwe-
But I do know that chip tuners have been known to tweak when it's active and when it's not..;-)
-Uwe-
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05-03-2007, 02:46 AM
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Does it really recognize misfires at idle? Most repair manuals say...
...if there are misfires estimated (e.g. in warm up or in deceleration) the recognition is blocked. I have also seen repair manuals say sth. about a certain RPM level, but that may differ from engine to engine...
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