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Old 04-16-2018, 03:11 PM   #1
RockinRam96
 
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48RE Slipping Shifting into OD

Like the title says my transmission has started to slip as it shifts into over drive. It will shift through the first 3 gears without an issue, but once it shifts into OD it shudders and slips a bit before grabbing ahold.

Is there something that I can do without tearing the whole trans apart or rebuilding the whole trans to extend the life of the trans or am I looking at a complete rebuild.

EDIT: Trans fluid is at the proper level, is pink and doesn't smell burnt.
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Old 04-16-2018, 03:54 PM   #2
SPEEDSHIFT
 
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You can pull the OD section off and have it rebuilt.
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Old 04-16-2018, 06:39 PM   #3
thatguy69
 
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Yep sounds like you get a leaky od piston seal. I'd put a gauge on it first and see what it's actually doing, maybe the OD solenoid is acting up.

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Old 04-16-2018, 09:01 PM   #4
RockinRam96
 
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Quote:
Originally Posted by SPEEDSHIFT View Post
You can pull the OD section off and have it rebuilt.

At that point is it just worth rebuilding the whole trans?


Quote:
Originally Posted by thatguy69 View Post
Yep sounds like you get a leaky od piston seal. I'd put a gauge on it first and see what it's actually doing, maybe the OD solenoid is acting up.

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Talking a line pressure gauge? Only seems to be when it shifts into OD or when I try to accelerate hard rolling at say 55 or 60 mph.



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Old 04-17-2018, 01:59 AM   #5
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Yes a line pressure gauge. Od rebuilds a heck of a lot cheaper than the rest of the trans. Drop the transfercase and 8 or so later out comes the OD unit.

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Old 04-17-2018, 06:09 AM   #6
RockinRam96
 
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Quote:
Originally Posted by thatguy69 View Post
Yes a line pressure gauge. Od rebuilds a heck of a lot cheaper than the rest of the trans. Drop the transfercase and 8 or so later out comes the OD unit.

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Does anyone sell a rebuild kid solely for the OD? Is it something I can do myself or is it an involved rebuild?


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Old 04-17-2018, 07:34 AM   #7
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Originally Posted by RockinRam96 View Post
Does anyone sell a rebuild kid solely for the OD? Is it something I can do myself or is it an involved rebuild?


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There are a couple 47/48re rebuild threads done by Power Driven Diesel in the Dodge Performance section that are really helpful. Take a look at those and you can get a feel on how comfortable you would be rebuilding it yourself.

It shouldn't be over $100 in parts for clutches, steels, and seals. Call around to your local transmission shops and see if they would be interested in rebuilding the unit for you. Im sure most will want to rebuild the entire trans, but im sure you can find someone to just rebuild the OD section for a decent price. It would take maybe 20-30 mins to rebuild an OD section once its off the trans.

Like thatguy69 said, it probably started as a OD piston seal leak, but by now im sure the clutches are wore out, and they are cheap.

You can get the trans parts online, or from your local trans parts dealer. I use Transtar as they are local. Just call and tell them what you are doing, they should be able to help.
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Quote:
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Anything stock is slow. That's why they invented money.

Last edited by SPEEDSHIFT; 04-17-2018 at 07:37 AM.
 
Old 04-17-2018, 07:59 AM   #8
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Originally Posted by SPEEDSHIFT View Post
There are a couple 47/48re rebuild threads done by Power Driven Diesel in the Dodge Performance section that are really helpful. Take a look at those and you can get a feel on how comfortable you would be rebuilding it yourself.

It shouldn't be over $100 in parts for clutches, steels, and seals. Call around to your local transmission shops and see if they would be interested in rebuilding the unit for you. Im sure most will want to rebuild the entire trans, but im sure you can find someone to just rebuild the OD section for a decent price. It would take maybe 20-30 mins to rebuild an OD section once its off the trans.

Like thatguy69 said, it probably started as a OD piston seal leak, but by now im sure the clutches are wore out, and they are cheap.

You can get the trans parts online, or from your local trans parts dealer. I use Transtar as they are local. Just call and tell them what you are doing, they should be able to help.
I've actually watched a YouTube video of a guy rebuilding a 48RE and it doesn't look to difficult. To rebuild the OD section it looks like I'd just need a press, which I have access to.

I am pretty mechanically inclined and pretty meticulous when working on components, so I think I have the ability, what I don't know or know how to go about checking is tolerances and clearances and such. I'd like to rebuild this OD section myself so I know how to do it. I'd like to build this trans for performance some day.

Thanks guys!
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Old 04-17-2018, 08:52 AM   #9
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Find a service manual, the 48s are pretty easy to rebuild.
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Old 04-17-2018, 09:50 AM   #10
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Find a service manual, the 48s are pretty easy to rebuild.


Do this and youíll be fine. I purchased an ATSG book before rebuilding mine.
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Old 04-18-2018, 07:59 AM   #11
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Here is a good place to look around at parts.

https://www.transmissioncenter.com/p...ategory/dodge/
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Old 04-21-2018, 08:28 PM   #12
RockinRam96
 
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Thanks for the input on shop manual looks like it cover everything I was concerned about.


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Old 04-22-2018, 06:03 PM   #13
RockinRam96
 
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I do have another question. My dad has an 05 that has tow/haul which is pretty handy, my 03 trans only has OD Off. Is there a way to convert it to tow/ haul? Is it a matter of a new PCM?


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Old 04-28-2018, 01:59 PM   #14
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you cant change it. its in the ECU and in the dash, i feel your pain, my 48re lives in tow/ haul. your 03 is a 47re i believe
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Old 04-28-2018, 02:01 PM   #15
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At that point is it just worth rebuilding the whole trans?





Talking a line pressure gauge? Only seems to be when it shifts into OD or when I try to accelerate hard rolling at say 55 or 60 mph.



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i would replace the OD solenoid first, its easy, but messy
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Old 04-29-2018, 06:49 AM   #16
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Tow/haul mode on a 04.5-05 doesnít allow you to stay locked into 3rd gear. I had to wire up the BD overdrive lockout which gave me this feature. Itís worth the investment, plus a kick up switch.
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