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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
False knock between shifts?
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<blockquote data-quote="basspro302" data-source="post: 15884371" data-attributes="member: 171674"><p>Looked at the logs you definitely have alot of knock. Can you do a log with spark advance? </p><p>If you have one knock sensor on the scan tool showing knock it’s probably only on that bank not noise from a loose bolt pr something. </p><p></p><p>Your lambda looks ok but i would try swaping the afr sensors side to side and look at it on the scan tool see if the knock switches to the other bank. </p><p></p><p>Then try and swap all 4 injectors bank to bank may be a faulty flowing injector. They are hard to pick out in fuel trims and afr sensors they can mask themselves and make it hard to diag.</p><p></p><p>I would also swap the plugs around check the gaps</p><p></p><p>It also could be interference from another component such as a coil or injector putting noise in the circuit. Only way to see that tho is with a lab scope.</p></blockquote><p></p>
[QUOTE="basspro302, post: 15884371, member: 171674"] Looked at the logs you definitely have alot of knock. Can you do a log with spark advance? If you have one knock sensor on the scan tool showing knock it’s probably only on that bank not noise from a loose bolt pr something. Your lambda looks ok but i would try swaping the afr sensors side to side and look at it on the scan tool see if the knock switches to the other bank. Then try and swap all 4 injectors bank to bank may be a faulty flowing injector. They are hard to pick out in fuel trims and afr sensors they can mask themselves and make it hard to diag. I would also swap the plugs around check the gaps It also could be interference from another component such as a coil or injector putting noise in the circuit. Only way to see that tho is with a lab scope. [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
False knock between shifts?
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