2500 Trans Replacement

grizzstang · Dec 20, 2017

IMO I wouldn't worry about the shudder and concentrate on clearing the misfire.

Did you switch out the injector like you mentioned earlier? I would have a close look at the plug that the coil connects too and the wires. If you switched the coil and the misfire remained your issue could be in the harness or maybe a poorly functioning injector. Did you use dielectric grease in the coil boots? It may be arcing inside the plug chamber. Are you sure the plug boots slid over the plugs properly?

HemiHavoc · Dec 20, 2017

Swapping injectors tonight. I have had the coil on and off probably 10 times now checking everything and it hasn't ever done anything different, so I doubt it's an install issue. The original coil from 1 has now been on 4 without a single hiccup for 50+miles and a few hours of run time. The harness will be under scrutiny if the injector doesn't change anything.

jslandscape99 · Dec 20, 2017

I have a 2011 Ram 2500 Hemi with the 545RFE 3:73 gears and I swapped them out with 4:10 for towing purpose. I only had about 30,000 miles on the gears if you are interested. I had my local tranny shop do the work and the gears are from American Standard.

HemiHavoc · Dec 20, 2017

jslandscape99 said:
I have a 2011 Ram 2500 Hemi with the 545RFE 3:73 gears and I swapped them out with 4:10 for towing purpose. I only had about 30,000 miles on the gears if you are interested. I had my local tranny shop do the work and the gears are from American Standard.

Gears in the diff aren't where my problem is. Thanks for the offer though

HemiHavoc · Dec 20, 2017

So I swapped injectors between 1 and 3 tonight. Drove for 10 miles, trans got to 120+° (known temps to have the shudder), no trans shudder, no codes. I'm taking the truck on a 200 mile trip this weekend for the holidays, so within that time I should know if the problem is truly resolved or if I have greater issues. Thanks for everyone's help!!

grizzstang · Dec 21, 2017

If it runs good with no codes on your trip I would still replace that injector that was on cylinder 1 and is now on 3. You could try running some injector cleaner through too. It may be clogged. My fear would be that it is leaking and that is why I would replace it.

HemiHavoc · Feb 21, 2018

I apologize for not updating sooner, but I've had some personal things going on. Update on the issue though is not great. I changed the injector and things seemed to be resolved. The vibration virtually went away, with a very slight and hardly noticeable noise at random times that was hard to duplicate. I was hoping maybe it was manifold vibration with broken manifold bolts. Things were ok for a few weeks, but then things seemed to get worse and I was noticing the noise more frequently. This past weekend I made 2 relatively long trips (100-150 miles each) and during each trip I noticed a significant vibration. The vibration felt just like hitting a rumble strip, and the first time it happened I actually tried to hit the rumble strip next to us to duplicate it, but quickly realized that there was no way I was that far over in my lane when it happened. When it happened the next day I was 100% confident it's in the truck. Anyone have thoughts on if this points to the converter, or something else? Thanks in advance

grizzstang · Feb 21, 2018

Well you still haven't actually replaced the coil or the injector that were possible issues with your misfire, you just moved them around. If it were me I would replace all the coils with your mileage to rule out the misfire. They are way cheaper than pulling the trans and replacing a torque convertor that you may not even need.

Ratket · Feb 21, 2018

Those year trucks have ball
Joint issues don’t they? could it be that? And even though you think your gears are ok, if it
Does it when under a load it
Could also be the gdiff gears, worth changing the fluid to inspect
For metal. My work truck f150 was making a whining noise at 100k I swore it was the tranny or a pad hanging up on a rotor, it was the rear diff
Coming apart.

HemiHavoc · Feb 23, 2018

Grizzstang, the injector has been changed and has fixed the misfire issue. No codes now, and my fuel mileage improved so I don't think the issue has anything to do with injectors or coils. Seems to just be a coincidende that the injector was bad, but didn't fully resolve my problem.

I know this should have probably been mentioned sooner, but I do have a whine that starts at about 2000 rpms and gets louder from there on up. I believed it to be an idler pully bearing, but tonight I ran it without the serpentine belt and the noise still exists, ruling out anything run by the belt. I feel like all signs point to the converter at this point, and potentially just a transmission replacement. Anyone have other suggestions?

HemiHavoc · May 17, 2018

I know I'm resurrecting an old thread, but I always hate when I'm looking for information on a problem I'm having and the thread ends with no resolution. It has taken a little while to get the money together and get a new transmission, but it is officially sitting at my brother's shop. We will be swapping it this weekend and I will make sure to update with our findings for anyone in the future

grizzstang · May 17, 2018

So not just the convertor you are replacing the whole trans.

Did the failing torque converter barf metal shavings through the trans and destroy it?

HemiHavoc · May 17, 2018

grizzstang said:
So not just the convertor you are replacing the whole trans.

Did the failing torque converter barf metal shavings through the trans and destroy it?

Not yet, but I wasn't going to take the chance. The new trans w/ converter was $1500 so it was a no brainer for me to replace it vs the time to rebuild mine and parts cost. Plus it looks like they do some modifications that should make it a much better transmission overall

HemiHavoc · May 19, 2018

So I finally feel justified in swapping my transmission. The converter wound up being absolute trash. I will post a video if I can figure out how. So if anyone is having a shudder and whine, my resolution was a full transmission swap, but at the very least the converter is bad. Hopefully if someone searches with a similar problem, this thread will help them. Thanks to everyone who helped

69GWC · May 19, 2018

After you fix the transmission you might look into lowering the gear ratio on the truck, this would really help it from happening again.
A transmission tune will help alot as well .

Fitz-0518 · May 19, 2018

HemiHavoc said:
So I swapped injectors between 1 and 3 tonight. Drove for 10 miles, trans got to 120+° (known temps to have the shudder), no trans shudder, no codes. I'm taking the truck on a 200 mile trip this weekend for the holidays, so within that time I should know if the problem is truly resolved or if I have greater issues. Thanks for everyone's help!!

I had nearly the same issue in my 07 5.7 Plugs, injectors and coil packs checked fine. Found the misfire was caused by a coil plug wire. Replaced with OEM wire set at 150K,,never had a problem since.

HemiHavoc · May 20, 2018

69GWC said:
After you fix the transmission you might look into lowering the gear ratio on the truck, this would really help it from happening again.
A transmission tune will help alot as well .

So the crazy thing is that this isn't the first converter to be swapped into the truck. My truck is a 2011, and it had a Mopar remanufactured parts decal on it. The remanufactured date was 01/03/2013, meaning the original converter only lasted about 2 years. Then a remanufactured one only lasted another 5. I really hope I'm not changing converters every couple years.

If ramcares sees this or wants to know, the decal says
AA3588A
P/N R8051146AB
S/N 000011833
Remanufactured 01/03/2013

69GWC · May 20, 2018

Its because the gearing in the transmission is to high and the shifting schedule is not worth a crap.
The high gear and bad shifting cause way to much heat and kill the torque converter.

HemiHavoc · Jun 6, 2018

Sorry it took a bit, but here is the video of the converter.

2500 Trans Replacement

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