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Power Strokes
6.4 Aftermarket
P0091 code
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[QUOTE="Diesel23, post: 763806, member: 6045"] Hey guys , search wasnt working for code did see one , about the harness and possible bad regulator on my hpfp , trucks running pretty good now have most all air leaks figured out , and smoke in check ,all lb settings at 0 , running hd300 mild on my blackmaxx pulled a code p0091 at half throttle truck was running fine , i have the diesel dr dual fueller set up , running 30% nozzles ,any input or something i should check or is it tuning issue ? thanks guys [/QUOTE]
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P0091 code
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