Vehicle wont hardly move on unless I press the pedal to the floor. It moves a lot better in reverse than forward. The trasmission was just rebuilt because the gears was all messed up and trans fluid was very milky and TCM was just replaced. The fluid level on the transmission, torque converter, differential is good. Im thinking the torque converter is bad. Any thoughts of whats going on? I just want to be sure i didnt over looked anything. Thanks in advance
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Transmission shifting issue m1165a 2012 hmmwv
- Thread starter Gclaude
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It's should be throwing codes if the pressures are out of whack...you will have to check codes via the diag port on the TCM, that will require the cable, if you don't have a cable, you need to tap into the TCM, a good trans guy should have a scanX 2000 to simulate The TCM.
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Action
Well-known member
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You have an m1165???
There are 2 pins at TCM that can be jumped with a paperclip to flash any codes on the trans light. I dont recall which pins, though.
There are 2 pins at TCM that can be jumped with a paperclip to flash any codes on the trans light. I dont recall which pins, though.
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- Brentwood, Calif
Once again, any Good trans shop can test the trans while in truck. If the trans was just rebuilt, call the rebuilder.
even if the TPS or TOSS were bad, the trans would be in limp mode, would not affect what you are stating.
when you say you have to push the pedal to the floor, I'm assuming you mean that the the RPM's are screaming too?
as this is a mechanical IJ pump....sounds to me like a bad rebuild. Who did the rebuild? Civ or Depot?
Right on Steve. Not enough info. Also, look to brake light switch adjustment it may effect the tc ability to operate correctly, amongst other sensors. I hope you chime back in with more info and or result.
BTW, M1165 is best hmmwv made! Just saying.
BTW, M1165 is best hmmwv made! Just saying.
Sorry it took me a while to reply. Anyway the vehicle only work in reverse so i disconnect the drive shaft and when i put in on drive and press on the gas, the output shaft going to the front diff is turning really slow and it would just stop. I think the transfer case is bad. Any thoughts
Wire Fox
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The transfer case has two jobs: to alter the gear ratio you're in (high range or low range) and to lock the front and rear differentials together. The TM's-which are your bible in your job-describe the fundamental operation of all the systems in the HMMWV you are working on and provide troubleshooting and diagnostic steps to follow in order to figure out the root cause of the problem you're having. Make use of the resources you have-you should have access to many of the tools I am envious of and only wish I had access to.
To the issue.... If you have reverse, but no forward drive, I highly doubt the transfer case is the culprit. This is sounding more and more like whoever rebuilt the transmission rebuilt it poorly.
This post has the best advice. Answer everything asked here and do everything suggested:
RetiredWarHorses said:
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Could be that or a broken halfshaft or diff....have you attempted to move it in HL ? This is the setting to Use when you have a broken halfshaft.