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    LB7: Air leak and speed sensor troubles, can't find the source help me please!

    Thanks it looks like I may be taking it to the mechanic. I don't think the injectors are going from what you've described. So there might be a leak somewhere else, or there might be a fuel return issue. I think anything past what I've done is going to be way over my head. That and I don't...
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    LB7: Air leak and speed sensor troubles, can't find the source help me please!

    I've had a problem with fuel delivery, and the output shaft speed sensor. I've completely rebuilt the fuel filter housing, and primer. I did find trash inside the molded gasket that has a retention spring inside the fliter housing, so thats all good and clean now, before I did that I wasn't...
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    Allison 5sp: Have a couple of trans codes that just popped up.

    Awesome thank you! Hopefully this clears up that problem.
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    Allison 5sp: Have a couple of trans codes that just popped up.

    Having same issue Which sensor is the output shafts speed sensor. From what I've searched it's on top of the transfer case in the 4x4s but I'm looking at 2 sensors on top one towards the front of the transfer case and one in the rear. I'm assuming it's the one closest to the drive shafts but...