Allison problems

Discussion in 'Class A / Diesel Pushers' started by gsw0815, Nov 13, 2010.

  1. dbarton291

    dbarton291 Senior Member

    OK good! While you're checking the trimmer valves, also take a look at the trimmer regulator. also take a look at the trim boost accumulator if it has one.
  2. GM4106

    GM4106 Junior Member

    Will do. Appreciate your help. Will post our findings.
  3. DavidV

    DavidV New Member

    I have a 1993 Pace Arrow 250hp diesel with MD3060 transmission and have almost the same problem. Has anyone had the same issues and if so, what was the fix? Any help with this problem would be appreciated. Thanks
    Last edited: Oct 3, 2017
  4. DavidV

    DavidV New Member

    After reading about several people having this same issue, I was fairly sure the trouble was in my ECU. It turned out that was correct. I sent the ECU to Transmission Instruments in Flower Mound Texas 1-866-439-9779 and had the ECU repaired. They did a great job by the way. I got the unit back, installed it and yea! fixed! Thanks David V
  5. Johnwj

    Johnwj New Member

    I agree with the first reply you got. Low Power to the TCM will give you this exact problem. After 2200 miles of intermittent similar problems, two towing jobs and Two service calls, Technician found low voltage on the IGNITION ON line. could not find the point of loss so he wired around it and Waa Laa, next 35000 miles were trouble-free (from this problem).

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