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  1. TwistedDiesel

    Getting an allison to hold TQ

    I have an Allison 2400 behind my 7.3 powerstroke that now has 400mm injectors and a 74mm VGT turbo. Now I'm playing tranny catch up! I did the converter flow valve modification so I don't lose any line pressure during lockup now, and that helped a lot. I can no longer slip it while locked in...
  2. TwistedDiesel

    TCCM (transfer case control module) getting HOT!

    I had a customers truck come in last week for a service 4wd message. Could not communicate with the TCCM, noticed that TCCM was hot to the touch, and was also draining batteries in about 4 hours. Measured battery drain current with vehicle asleep, and got 3A. Pulled connector at transfer case...
  3. TwistedDiesel

    Allison 6sp: Erratic Shifting, and Intermittent Lockup with P0960

    I have a 06 6spd in a Toyota pickup behind a Detroit Diesel. I am using a medium duty A50 TCM that my Allison dealer flashed for me to match a 1000 series 6 spd to CAT 4cyl engine. When I first drove it, I had no lockup at all, it learned to shift all 6 gears nicely, and I was really happy...
  4. TwistedDiesel

    Erratic Shifting, and Intermittent Lockup with P0960

    Sorry, wrong forum.
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