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Little big mack

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  1. Little big mack

    Hopefully you can help me out. 

    Boost pressure wont build over 30lbs on aset 460. Do see the green wire has some wear through but i wrapped in electrical tape for time being. 

    But the reason im asking is i have a 3-2 code with if you push mode and reset at same time on dash is 5022-02 m128. Code means engine speed sensor but which one. I just replace both 2months ago and i only have one spare and hoping its not the bellhousing bc its a bitch. Also can it feel like truck is in limp mode.

    Still kinda new at understanding mack.but im some mechanically inclined

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