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  1. TwistedDiesel

    Getting an allison to hold TQ

    Thanks for all the great responses. Mike L I see you have options for 290 and 310 PSI, that doesn't stress the case lugs? I'm going to have to get with you for some PR and trim springs. I'm going to give you a call in about a week when have some more cash, so feel free to leave me a list here of...
  2. 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...
  3. 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...
  4. TwistedDiesel

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

    I finally put 1 300lb gauge on it, and have all the correct pressures, but after driving it for a little while, I had another code for TPS low input, I changed my TPS for one that shows about 6.5% angle at idle, so that is fixed. I also wired a solenoid in right at the TCM, and no more P0960...
  5. TwistedDiesel

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

    OK, It seems like it has something to do with oil temperature, It doesn't work in the cold at all. I Also started the engine and left the TCU off, when I energized the TCU, it looks like it tries to energize sol G for a second, and errors out almost instantly.
  6. TwistedDiesel

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

    Hey mike, if it's easier on the phone, just let me know, I just feel like i'm just one of the millions who want your help, and I sure don't want to bother you with phone calls unless it's better for you.
  7. TwistedDiesel

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

    Ok so it took me all day to get the No. 4 O-Ring boss/hose/gauge setup, we don't have parts houses open sunday around here.... and here are the results. My gauge is not that accurate, I had a choice of 100 psi or 2500 psi, sooo. At startup: 140 psi reverse, 140 psi D: 135 psi TC lock, 75 psi...
  8. TwistedDiesel

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

    OK will do, I'll be at the shop in about an hour.
  9. TwistedDiesel

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

    Why does it work then? I can command it on and off and hear a difference in pressure in the trans. What do I do next?
  10. 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...
  11. TwistedDiesel

    Erratic Shifting, and Intermittent Lockup with P0960

    Sorry, wrong forum.
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