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  1. B

    Weird allison issue

    I figured it out the tcm was bad (go figure) it was calling randomly for extremely high line pressure higher than what the trans was designed for and it was popping the relief valve and blowing the fluid out of the vent and screwed the seals up in two brand new ati transmissions
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    Weird allison issue

    I checked it and it's full I also built it when i replaced the transmission the first time
  3. B

    Weird allison issue

    The fluid is clean new converter on both transmissions and it is at proper levels for the temperature it doesn't matter if the trans is hot or cold when it pukes fluid it has done it cold at start up and hot on shut down and the cooler was flushed both times
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    Weird allison issue

    No temp spikes at all and that's the problem I'm a trans tech and it has me dumbfounded two transmissions same issue new Tcm same issue I'm lost
  5. B

    Weird allison issue

    So I'm having an issue and it has happened with two transmissions now at random times my transmission will puke all its fluid out fill it back up and it will be fine no leaks for weeks then it dumps all the fluid again I'm at a loss as to what it'll be
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