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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
False knock between shifts?
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<blockquote data-quote="Kman11" data-source="post: 15693880" data-attributes="member: 179746"><p>Another quick update - I have a friend who is a mechanic, he used his scan tool and could see the two knock sensors. Knock sensor 1 was picking up the high amount of knock when revving, knock sensor 2 was moving only slightly.</p><p></p><p>Anyone know which side of the motor knock sensor 1 is on?</p><p></p><p>We took the blower belt off and ran it, still knock when revved/no load.</p><p></p><p>Listening with a stethoscope to everything we could think of, no dice. Listened to the engine all over, nothing sounds odd / off.</p><p></p><p>Drove it around a bit tonight for some more data logging. Under a load it only shows the knock at first throttle, if you keep it floored it slowly add's timing back in.</p><p></p><p>Sometimes it does go WOT without knock, and it run's great all the way to 7k(where i normally shift). </p><p></p><p>If there was an internal engine issue, do you guys feel it would be obvious at this point?</p><p></p><p>Any chance it could be the knock sensor itself? It appears to be a bit of work to get at them. I'm debating going that direction.</p><p></p><p>I can tell you all, whatever is causing this, i'm very much looking forward to finding what it is, it may save someone else a headache in the future!</p></blockquote><p></p>
[QUOTE="Kman11, post: 15693880, member: 179746"] Another quick update - I have a friend who is a mechanic, he used his scan tool and could see the two knock sensors. Knock sensor 1 was picking up the high amount of knock when revving, knock sensor 2 was moving only slightly. Anyone know which side of the motor knock sensor 1 is on? We took the blower belt off and ran it, still knock when revved/no load. Listening with a stethoscope to everything we could think of, no dice. Listened to the engine all over, nothing sounds odd / off. Drove it around a bit tonight for some more data logging. Under a load it only shows the knock at first throttle, if you keep it floored it slowly add's timing back in. Sometimes it does go WOT without knock, and it run's great all the way to 7k(where i normally shift). If there was an internal engine issue, do you guys feel it would be obvious at this point? Any chance it could be the knock sensor itself? It appears to be a bit of work to get at them. I'm debating going that direction. I can tell you all, whatever is causing this, i'm very much looking forward to finding what it is, it may save someone else a headache in the future! [/QUOTE]
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Engine/Tuning
False knock between shifts?
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