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Old 05-30-2018, 07:04 AM   #1
coorsman2005
 
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Trucks been great until last night

Wife leaves the base ball fields with the kids and then. All the dash lights go crazy like a strobe light more less. Dinging like crazy almost constant. Pops up says service shifter then something about the transmission. It goes so fast you can’t read it. Throwing 4 codes. U0140 u0001 u0100 u0121 Something else that kinda blew my mind. When it’s going crazy. If I just plug my code reader in it all stops. If I clear the codes and leave the reader plugged in everything seems normal as soon as I inplug the reader it freaks out. Ideas from anyone would be great. Other then the freaking out of the dash truck runs and drives perfect.
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Old 05-30-2018, 07:06 AM   #2
coorsman2005
 
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Also I found this YouTube video about fuses being loose every one of mine pushed in further. Thought that was kinda odd. https://www.youtube.com/watch?v=l68thxvy-uc


I have a video of our dash going crazy but it won’t let me post the short video.
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Last edited by coorsman2005; 05-30-2018 at 07:09 AM.
 
Old 05-30-2018, 07:31 AM   #3
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U codes are communication codes. Sounds like a plug isn't fully seated somewhere and is momentarily losing contact, or your fuse box has a gremlin.
 
Old 05-30-2018, 08:02 AM   #4
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Also it says. Don’t shift from drive do not shut engine off wtf
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2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
 
Old 05-30-2018, 09:22 AM   #5
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Also it says. Don’t shift from drive do not shut engine off wtf
Got an appointment at the stealership in the morning. We will see what they say. It was acting funny shifting this morning. Told the wife to plug in my code reader. She plugged it in all the dings stopped and started shifting perfectly. Who knows what the heck. Gotta be a bad connection like said above. It’s just where.
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2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
 
Old 05-30-2018, 09:23 AM   #6
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I'd unpin your OBD2 port and see if anything looks goofy there. I bet your two CAN lines are touching somehow and messing up communication.

Either that or possible the terminating resistor (wherever that is on this truck) lost solder and the code reader's resistance does the same job. I feel like that's less likely though.
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Last edited by CorneliusRox; 05-30-2018 at 09:25 AM.
 
Old 05-30-2018, 09:32 AM   #7
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Will light duty have the resistors?

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Old 05-30-2018, 09:36 AM   #8
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Quote:
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Will light duty have the resistors?
All CAN needs a terminating resistor. J1939 uses 60 Ohm I believe (either that or 120 Ohm). I'm not sure what 9141-2 is though.
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Old 05-30-2018, 10:28 AM   #9
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i had a ground issue in an obd2 port once. very similar symptoms.
 
Old 05-30-2018, 11:14 AM   #10
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Quote:
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All CAN needs a terminating resistor. J1939 uses 60 Ohm I believe (either that or 120 Ohm). I'm not sure what 9141-2 is though.
I should have said external


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Old 05-30-2018, 12:43 PM   #11
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Ok I will check this out when I get home
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Old 05-30-2018, 07:37 PM   #12
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8CEBB4C7-C19A-45E8-8E8C-5311CB2B98D6.jpegWell think I may be onto something. I found what I think are the cheap wire splice crap at the obd2 port. Let me know if that’s what it is if so I’m thinking I may have a cut wire. Maybe someone got a dui and that’s how they hook them up he’ll i dunno.
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1990 2wd d100 4bt nv5600 vailair single disk in progress
 
Old 05-31-2018, 12:08 PM   #13
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God forsaken scotch locks. Someone needs locked in a portable toilet and set on fire.
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Old 05-31-2018, 12:25 PM   #14
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God forsaken scotch locks. Someone needs locked in a portable toilet and set on fire.
Portable toilets are unsafe, unsanitary havens of satan, they are similar to scotch locks in evil-ness.
Even the most idiotic scotch lock user deserves a better fate.

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Old 06-01-2018, 03:48 PM   #15
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Well ended up being a wire came loose and was grounding out
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2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
 
Old 06-01-2018, 03:51 PM   #16
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Quote:
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Well ended up being a wire came loose and was grounding out
What one? I'm going to buy myself a beer if I guessed it right
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Old 06-03-2018, 07:14 AM   #17
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I’m not a 100%. The guy on the phone said it was behind the dash on the passenger side shorting to the body. Said it was a low voltage wire? Not sure but seems to be good now
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2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
 
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