68RFE issues 3rd and 4th gear - Dodge Cummins Diesel Forum
4th Gen Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine, Transmission, etc...NO ADVERTISING

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 09-14-2017, 03:14 PM Thread Starter
Newbie
 
Join Date: Oct 2012
Location: south of Houston, TX
Posts: 14
Thanks: 4
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
68RFE issues 3rd and 4th gear

Hi,

I have 2015 2500 Mega Cab, and I have following issues: during acceleration either in tow mode with exhaust brake or not, there is a loud clank noise when transmission shift from 3rd to 4th gear- *feels like there is a big gap between shifting and I can swear tires spin during that time,
* another issues is, if I drive in the city (slow speed) transmission shifting between 3rd and 4th gear is more like fishing for right gear, and sometimes I don't have no traction for like 1-2 sec...

took do dealership and they say they cannot repeat same effect. It has only 35k miles, and it start acting like this in last 5000 miles...

Still stock, and no towing at all...

any suggestion

thank you

stmanga1 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 09-14-2017, 07:43 PM
Newbie
 
Join Date: Nov 2015
Posts: 48
Thanks: 1
Thanked 4 Times in 4 Posts
iTrader Score: 0 reviews
Sounds normal for the truck, not right mind you, but normal. Mine does the same type of behavior, clunk shift between 3 & 4, sounds terrible, not every time. Mine is completely stock
Timberwolf2015 is offline  
The Following User Says Thank You to Timberwolf2015 For This Useful Post:
stmanga1 (09-15-2017)
post #3 of 4 (permalink) Old 09-15-2017, 05:29 AM
TECH SPECIALIST
 
Join Date: Feb 2010
Location: Grass Lake, MI
Posts: 3,775
Thanks: 2
Thanked 1,724 Times in 1,041 Posts
iTrader Score: 0 reviews
I think some of what you may be noticing on a 3-4 shift is that you will often get the 3-4 upshift, followed (maybe a second later) by Torque Converter Clutch (TCC) engagement. It's actually two separate events, but it feels kinda like it "shifts halfway" and then finishes the shift. In reality, it's an upshift, followed by TCC application.
TransEngineer is offline  
The Following User Says Thank You to TransEngineer For This Useful Post:
stmanga1 (09-15-2017)
Sponsored Links
Advertisement
 
post #4 of 4 (permalink) Old 09-15-2017, 09:35 PM Thread Starter
Newbie
 
Join Date: Oct 2012
Location: south of Houston, TX
Posts: 14
Thanks: 4
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
thank you, that explains a lot... appreciate a lot
stmanga1 is offline  
Sponsored Links
Advertisement
 
Closed Thread

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome