weak torque converter lock up - Dodge Cummins Diesel Forum

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post #1 of 5 (permalink) Old 08-14-2013, 10:23 AM Thread Starter
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weak torque converter lock up

a couple months ago coming home from work I got off the Turnpike and when I started driving I noticed that when the torque converter locks up it's not_fully locking up all the way weather o/d is on or off has anyone had this happen or has a clue

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post #2 of 5 (permalink) Old 08-14-2013, 11:38 AM
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Other gears lock in ok? Could be a seal in the OD lock up clutch piston that is leaking oil therefor the piston is not holding the clutches tight upon lockup. But I would think if that we're the case you would have a badly slipping OD.


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post #3 of 5 (permalink) Old 08-14-2013, 04:27 PM
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weak? as it it jumps in and out of lock?

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post #4 of 5 (permalink) Old 08-14-2013, 11:47 PM Thread Starter
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No when I feel it go in weather it's in o/d or not it just doesn't pull like it used to and like I said it was working on the turnpike when I got off the ramp and started to drive again that's when it started this and never went back.
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post #5 of 5 (permalink) Old 08-14-2013, 11:55 PM
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If you have a 1994 0r 1995 you have a 47RH transmission.
If you have a 1996-2002 you have a 47RE.

I would first check your fuel pressure. If you have low fuel pressure you would have lower power. That may be the difference instead of the transmission.

If your tc is slipping it probably needs to be replaced. It has a clutch inside just like a brake lining. If it is worn out it is worn out.

What year is your truck, what modifications have you done to it?

Look here for transmission troubleshooting links. The 47RE has a lot in common with the 47RH. The big difference is more electronics in the valve body.
94-98 Drivetrain (except engine) - Dodge Cummins Diesel Forum

1997 3500 club cab 3.54 gears towing & camper pkg. Still stock with a built transmission at 120k. 4" exhaust, 4kgsk, and exhaust brake waiting for installation. 37337 upgrade. Still need ideas for improvements for hauling 15k fifth wheel.
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