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  1. SpeedlabDan

    Allison 1000 5spd in limp mode

    Ok guys it seems after this engine swap my Allison is in limp mode. Locked in 3rd with full line psi. As far as I can tell with my simple code reader the tcm is requesting illumination from the ecm. I'm still using the factory Allison tcm and harness removed by howell EFI and mated with the...
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