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Re: 6.4L Part Time Runs Bad
Posted to HD/Fleet Forum on 7/22/2020 4 Replies

It runs so bad I never tried a KOER when it acts up. I have driven it a few miles when it has a fit and after drive it still only set the P0091. I had already replaced the short jumper harness to the pump. I also ran new wires from pcm to 4 pin connector at pu... Login to read more.

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