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  1. T

    Upgraded to an M923

    Looks great! I was amazed at how much easier a substantially bigger truck was to drive when I got mine. Look like the kids are lovin' it. Belt fed Nerf gun...too cool. I wish I could do the parade thing. My insurance (State Farm) was pretty emphatic about no passengers in the back. Already...
  2. T

    Totaly smitten

    Looks awesome. Why is it that everyone can seem to prefect CTIS except the US? Do we just over-engineer everything?
  3. T

    CTIS PCU Chattering Then Faults

    I just ordered a sensor from Those Military Guys. Suprman told me he has good used PCUs. I'm hoping it's just the sensor itself and not the entire PCU. Check the continuity from the connectors on the PCU back to the ECU connector. I've been told numerous times there is a propensity for the...
  4. T

    CTIS PCU Chattering Then Faults

    Found a PCU sensor. I guess I'll know here in a few days if that was it.
  5. T

    CTIS PCU Chattering Then Faults

    I went through the troubleshooting guide again step by step. I checked every single electrical connection checking for continuity and shorts. I finally got to the section on checking the PCU sensor. Everything is pointing to the sensor being bad. Of course, it says if it fails the tests...
  6. T

    CTIS PCU Chattering Then Faults

    Should that little pressure relief valve on the side of the PCU open right away? I took the cover off the PCU so I could watch it and feel around for leaks when it tries to start. As soon as the system hits 120 PSI the CTIS turns on and tries to work. That little relief valve opens right...
  7. T

    CTIS PCU Chattering Then Faults

    This was the exact symptom I was having before mine quit, and only gives the "5 light flash" error. Did you fix it?
  8. T

    M939A2 CTIS PCU solenoid replacement

    Carefully going through the trouble shooting guide again, I'm seeing the PCU Sensor as a possible cause. This is the little square sensor on top of the PCU. I can't find anything that says how to test this sensor without the computer or having a replacement sensor.
  9. T

    M939A2 CTIS PCU solenoid replacement

    I had 48 ohms and continuity on them all. It's almost instant on the 5 light flash. When I first got the truck it worked fine, then it started making a real fast "click-click-click-click". If I pushed any mode button it would stop clicking for a little while and work normally. Then one day...
  10. T

    M939A2 CTIS PCU solenoid replacement

    I just ordered 3 of the solenoids from PLCcenter.com. Both times I took apart the PCU the same valve was open. I know it was clean and moved freely. I'm hoping it's the solenoid for that valve that's acting up, even though it's testing OK. As soon as the truck hits the 120 PSI and the CTIS...
  11. T

    Just got my first 5 Ton

    Hmmm, my CTIS was working fine when I got the truck. Then it starting acting up and I could hear a solenoid cycling very quickly: click click click click. If pushed a mode button (any of them) it would stop and work normally. Then one day it quit working and I got the 5 light error. When I...
  12. T

    Got a Deuce! '62 M35A1

    We have the Teton Pass here. 10% grade in spots. There are 2 runaway truck ramps, but they are on the opposite side of the road! Scary that a truck would have to cross the center and go off the left side. They have been used many times. Had a tour bus full of people lose brakes and hit the...
  13. T

    Easy recovery today of M925A1

    Nice! I almost bid on that one for the winch and the hard top. Then I remembered I'll be homeless if I bring home another big truck.
  14. T

    Water in oil in M925A1 - New addition

    That's a good looking truck. Hope it works out OK for you.
  15. T

    "Major Zippidy" M923 build

    Awesome work!
  16. T

    M939 Quick Fuel Filter and Pump Re-Prime After Changing Cartridge Element

    This thread just saved me. I drained a little fuel out of filter per PMCS. Truck ran for a while then died and wouldn't re-start. I figured it was air in the system and went to the TM. They say to prime the system, but both version I have only showed the older style pump with the "T" handle...
  17. T

    What have you done WITH your wrecker this week?

    "Some" of us in Jackson cheer when people like that leave.:naner:
  18. T

    Interesting M-1070 video

    Sweet! Can't wait to see the finished project!
  19. T

    Was Stuck in M923A2, learned many lessons

    Here are the pics my buddy took on the recovery: Heading in, Doesn't look too bad: Still there: Work in progress:
  20. T

    Was Stuck in M923A2, learned many lessons

    Got the ABS fault fixed. The little wire clip on the main plug into the ECU was popped off one side and the plug was a little loose. Took it apart and cleaned it up and the fault cleared.
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