Slow speeds 6.7L on/off pedal

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

jimmyz33

Junior Member
Joined
Jul 18, 2022
Posts
5
Reaction score
4
Location
Denver, CO
Ram Year
2020
Engine
6.7 Cummins
I just "upgraded," from a 2020 6.4 to a 2020 6.7 - it's my first diesel. So far, it's been pretty decent. Towing mileage is up almost 50% with our 11k lbs loaded trailer. I have never driven diesels - ever - so I'm curious if there are any issues with trying to run them at lower speeds. I have trouble keeping the truck at a consistent speed since I have to let off the pedal - kind of like on/off over and over - when I'm running slower that 30 MPH without the trailer. The truck has 24k miles and I never experienced anything like that with my gas 2020 ~ which I bought new and ran up to about 22k miles. Is this normal? I can of course get this to the dealer and warranty it, but before I take it in and look like a complete rookie, I thought I'd ask for some input. Thanks in advance.
 

crash68

ACME product engineer
Staff member
Administrator
Supporting Member
Joined
Mar 20, 2016
Posts
10,703
Reaction score
16,709
Ram Year
2015
Engine
3.0 EcoDiesel
no problem running a diesel at slow speeds, the accelerator pedal does have a different "feel" vs a gasser. The torque converter will lock up at a lower rpm compared to a gasser as the torque band is much lower. The Cummins makes more torque just over idle than the 6.4L does at it's peak.
Will the truck hold 25 mph if you set the cruise control?
 

stevenP

Senior Member
Joined
Nov 9, 2014
Posts
641
Reaction score
621
Location
northern Indiana
Ram Year
2022 2500 Longhorn
Engine
6.7L Cummins
I had a silverado with the duramax, and when I tried to go slow thru camgrounds it just didnt want to accommodate. It used to want to do 20mph, or nothing. With the RAMs I feel they are much better at the slow or creep speeds. Especially with the aisin trans.
 

Scottly

Senior Member
Joined
Oct 11, 2018
Posts
1,185
Reaction score
2,197
Location
Safety Harbor, FL
Ram Year
2021
Engine
HO 6.7 Cummins
I live in an area with a lot of 25mph speed zones...cruise control is your friend. The 15mph school zones are another issue...Too low for cruise, so you have to feather it a bit. As mentioned above, it's the torque...Peak torque is at 1400rpm. That was up near 5K on your gasser. Big difference in slow speed response to throttle inputs.
 

Wild one

Senior Member
Joined
Jan 17, 2016
Posts
13,725
Reaction score
23,401
Ram Year
14 Sport
Engine
5.7
I live in an area with a lot of 25mph speed zones...cruise control is your friend. The 15mph school zones are another issue...Too low for cruise, so you have to feather it a bit. As mentioned above, it's the torque...Peak torque is at 1400rpm. That was up near 5K on your gasser. Big difference in slow speed response to throttle inputs.
Peak torque isn't at 5,000 with the 6.4,it's at 4,000
 

Wild one

Senior Member
Joined
Jan 17, 2016
Posts
13,725
Reaction score
23,401
Ram Year
14 Sport
Engine
5.7
Ehhhh...same difference. Ya ain't got shizit down bottom, either way. But thanks for pointing that out.
You're not the brightest bulb in the room if you think peak torque at 4,000 is the same as you're claim of 5,000 is.No problem sir, i have no issues with correcting a so-called genius,lol :cheers: . Have a good day,and next time do a little more research before flapping your gums:Big Laugh:
 

JayLeonard

Senior Member
Military
Joined
Oct 5, 2019
Posts
732
Reaction score
822
Location
Florida
Ram Year
2021
Engine
6.7 L Cummins
I have finally mastered the “campground creep” lol and it requires a feather touch on the go pedal. But it’s closer to 8-9 mph instead of the posted 5.
 

Moose2

Senior Member
Military
Joined
Aug 28, 2021
Posts
1,307
Reaction score
925
Location
Iowa
You're not the brightest bulb in the room if you think peak torque at 4,000 is the same as you're claim of 5,000 is.No problem sir, i have no issues with correcting a so-called genius,lol :cheers: . Have a good day,and next time do a little more research before flapping your gums:Big Laugh:
Someone ******* in a bunch?
 

Wild one

Senior Member
Joined
Jan 17, 2016
Posts
13,725
Reaction score
23,401
Ram Year
14 Sport
Engine
5.7
Someone ******* in a bunch?
Not at all,i just love correcting idiots,that really have nothing to offer to a thread,like his comments in the "noise" thread.I'd of left him alone if he'd of been right,but if you're gonna spout off incorrect info,i'm definitely going to make you look like an idiot,lol :signs1:
 

Latest posts

Staff online

Members online

Forum statistics

Threads
194,926
Posts
2,864,176
Members
155,296
Latest member
VLG6963
Top