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2013-14 Shelby GT500
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<blockquote data-quote="Robot_trainer" data-source="post: 16048585" data-attributes="member: 157423"><p>Mine was built around the same time. If I were to guess it could be a few possibilities. I've heard one case where the damper was not installed correctly or came loose, bolt loosened, etc which caused harmonics in the crank sensor. The rear monitoring sensors not only monitor the cat, but they can change change A/F by signaling the PCM that a condition is developing that could damage the cats. If they arent reading right it could send a false signal. It looks like the miss is on one bank. Try swapping the rear sensors side to side and see if it moves to the other bank. Could be a wiring problem. Hopefully its not a bad PCM.</p></blockquote><p></p>
[QUOTE="Robot_trainer, post: 16048585, member: 157423"] Mine was built around the same time. If I were to guess it could be a few possibilities. I've heard one case where the damper was not installed correctly or came loose, bolt loosened, etc which caused harmonics in the crank sensor. The rear monitoring sensors not only monitor the cat, but they can change change A/F by signaling the PCM that a condition is developing that could damage the cats. If they arent reading right it could send a false signal. It looks like the miss is on one bank. Try swapping the rear sensors side to side and see if it moves to the other bank. Could be a wiring problem. Hopefully its not a bad PCM. [/QUOTE]
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2013-14 Shelby GT500
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