If my truck was starting to slip in 5th and 6th gears it would go into limp mode right? sometimes I think I am slipping but it does not really shoot up in RPM so maybe I am just paranoid? Limp mode would let me know when it is not happy right?
Allison 6sp: Am I paranoid or is it slipping?
- Thread starter Fat_Robi
- Start date
mine has only limped once and it was due to a tie-up but she does slip quite a bit with no limp mode showing. i have punched it full throttle on the highway in 5th with my twins on and you can watch the tach climb out of synch with the speedo and feel the slip. no limp mode when slipping :-/
i would say it is definitly possible you are slipping just not limping. good luck i don't wish wounded trannies on anybody no matter how bad we all deserve them lol!
i would say it is definitly possible you are slipping just not limping. good luck i don't wish wounded trannies on anybody no matter how bad we all deserve them lol!
I feel my truck vibrate pretty decent when i roll into it in high gear... Get to about 2100 RPM and it shutters kinda and the RPMS raise very quickly to about 2250-2300. Does that sound like the convertor aswell Mike? I've never had a code pop up for slippage, do our truck's only log clutch slippage or both converter and clutch?
EDIT: Just took a drive, it actually slips from 1800 to 2000 RPM. Don't know if that makes a difference or not
EDIT: Just took a drive, it actually slips from 1800 to 2000 RPM. Don't know if that makes a difference or not
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For some reason the Alli is very slow to throw any converter clutch slip code. Years ago I accidently blew off a TCC sealing ring with air gun and it took 85 miles for it to throw a code. This Alli had no TCC for 85 miles.
To answer another question; the TCM will only read TCC slip. Trans slip will show up with an incorrect ratio code ( limp ).
To answer another question; the TCM will only read TCC slip. Trans slip will show up with an incorrect ratio code ( limp ).
Limps mostly occur on the gear change.
When my TC was shot I could get into it on the highway and the truck wouldn't accel much. Like stated, the tach and speedo wont match too well. You'll know when its time.
When my TC was shot I could get into it on the highway and the truck wouldn't accel much. Like stated, the tach and speedo wont match too well. You'll know when its time.
My truck will free rev the RPM's and not limp. It use to limp if I got on it too hard in 5th gear. Now it just slips and doesn't go in limp mode. I haven't limped it in awhile but it's getting easier to slip it.
I don't think he reads diesel forums anymore, if he has a question he will ask me if I know the answer or ask me to look it up. Fortunately I am getting close to what I need for transmission parts. Thank you federal government for educational pell grants!
