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Nse123

San Diego, CA

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There are no codes stored in the pcm. Ive replaced both 02 sensors, fuel filter, anti knock sensor, spark plugs/wires, and the pcv. Ive disassembled and cleaned the throttle body, run a heavy duty 3m injector cleaner through her, checked for vacuum leaks, checked the egr isn't clogged, removed and flushed all the valve lifter, fuel pressure is 48 lbs steady, and still. It is a wrapping that is most pronounced aroundf 3000 rpm when you are just about to shift. It vanishes if you let off or nail the throttle to the floor So its maintaining a rpm + or - 10% throttle otherwise it disappears. Im thinking it could be mechanical at this point but not typical symptoms in my exp. Im ready to tear her down but wonder its something I may have missed with the pcm or sensors controlling it to do so...


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