2015 ram 3500 jerking hard

[steadypraying42]

It happens ever so often but today was a biggie. I was rolling to a red light foot off of the pedal and then the light turned green so I push on the gas to continue driving, then it happens. My truck jerks back and forward as if my engine just fell out or something. Truck only has 10k miles on it now. It's like the transmission is slipping hard. Anyone know what this is all about?

[NinerBikes]

Cummins12V98 wrote:

Bigfoot affair wrote:
steadypraying426 It happens ever so often but today was a biggie. I was rolling to a red light foot off of the pedal and then the light turned green so I push on the gas to continue driving, then it happens. My truck jerks back and forward as if my engine just fell out or something. Truck only has 10k miles on it now. It's like the transmission is slipping hard. Anyone know what this is all about?

Cummins12V98 wrote:
It is NOT a problem. You are at that moment where it drops into 1st that in reality is like having a granny low then immediately it hits 2nd so it causes a jerking motion the harder you are pushing the go pedal the more noticeable it is. It's not slipping and the engine is not falling out.

These Aisin's act a lot like a "built" trans, that is a good thing.

Really, a good thing? OP, I suggest you take it in and have the dealer look at it.

The Aisin trans is not your typical slush box trans that has slippery smooth shifts. They are firm and the op had a situation that can happen when there is such a difference in ratios between 1st and second. Like I said with the Aisin in first it's like Granny low with a stick shift.

Op take it to the dealer if you want, please let us know what they say.

This is exactly what my Touareg TDI will do with an Aisin 8 speed gearbox between 1st and 2nd gear if I don't feather the throttle properly in stop and go traffic. Sometimes you are at an "in betweener" speed where the gears shift. If you get on the throttle too quick, or too hard, this clunk happens. No amount of reprogramming will fix it, the ratios jumps between 1st and 2nd gear are big, 1st is like a low first in a 4x4, 2nd is like 1st in a truck without a granny gear.

Feather the throttle gently with a diesel, problems and clunks mostly solved by educating your foot on proper, gentle application of throttle when first accelerating. Roll your foot into the throttle, don't mash it. The Aisin is a good, tough gear box, don't abuse it, drive it smooth, and it will last a long, long time. Patience.

[NinerBikes]

arush19 wrote:
I vote for a reflash.



Still, I will occasionally surprise my truck with the slow-and-go maneuver and it jerks while searching for a gear. I try to avoid this by coasting a split second before gently applying the accelerator.

There you have it. Don't mash the throttle on a diesel, roll your foot into it over 1/2 to 1 second. This isn't a race, smooth driver foot input is what is important, to allow all the computer brains to think correctly and do what they need to do before the throttle feeds a fat load of diesel to the engine. You want things to ramp up slowly.

[Bionic_Man]

Cummins12V98 wrote:
"I agree the folks over at the cumminsforum are very sensitive and full of hate including the moderator. A while back I asked about a problem with a 5.9 cummins we had and got scolded."

If you truly want good advice join the TDR. Very knowledgable people over there.

TDR may be a better forum, but they likely can see who the trolls are as well. Could be why they are rough on some......

[steadypraying42]

Thanks Bigfoot for your concern.

I have realized that this site can be a tad bit rough at times. I just trump it up to the guys have nothing better to do than stay on this forum play the big shot role and forget that they were once new guys too.

For the others that provided insight into my issue I do appreciate your help. I have scheduled my appointment with the dealer and will let you all know the outcome.

[camping_man]

It's the dealer's problem , don't even try to trouble shoot it yourself. If one dealer can't fix it, try another.

[goducks10]

I got into it with a guy on the Cummins forum about my truck not getting the recall for the tie rod ends. He insisted I would get it. I called Chrysler and they said it would not need it because of whatever reason. It's been about 2 years or so since then and no recall. Lots of arrogant a holes over there.
If your trucks not lifted with 35s and totally deleted then you don't exist.
Only good thing about the site is with a 2500 you can tow a 17,000lb 5th wheel at 75 mph. :E

[Cummins12V98]

"I agree the folks over at the cumminsforum are very sensitive and full of hate including the moderator. A while back I asked about a problem with a 5.9 cummins we had and got scolded."

If you truly want good advice join the TDR. Very knowledgable people over there.

[DirtyOil]

Electronic Throttle Control.... go pedal is "fly by wire"... as others have said... go to dealer get er checked out by the "experts"... I made a funny! :B

[FishOnOne]

Bigfoot affair wrote:

rhagfo wrote:

Bigfoot affair wrote:
Nice guy's. A guy is here asking for help with his new Ram and some the Ram fans jump on him for is terminology... Had he posted about how awesome the truck is doing there wouldn't have been any of that....

UNREAL!

OP, I did a quick search over a the Cummins forum for you.. Here are some of the results, I didn't read through them, I will leave that up to you.

Bucking

Jerking

The point was not to pick on the OP, but to educate him, so he doesn't think gas, and thinks Fuel or diesel. One the worst things is to pull into a fuel station and gas up a diesel!!!

Here in Oregon, I make sure the fuel jockey grabs the correct hose when fueling.

Probably better way's to educate someone without humiliating them on a public forum. Maybe a simple OBTW or PM would have been better.

I started to read some of the links I posted for the OP to read... Can't believe how some of the members jump on people looking for help with their Rams.

I agree the folks over at the cumminsforum are very sensitive and full of hate including the moderator. A while back I asked about a problem with a 5.9 cummins we had and got scolded. :R

[Bigfoot_affair]

rhagfo wrote:

Bigfoot affair wrote:
Nice guy's. A guy is here asking for help with his new Ram and some the Ram fans jump on him for is terminology... Had he posted about how awesome the truck is doing there wouldn't have been any of that....

UNREAL!

OP, I did a quick search over a the Cummins forum for you.. Here are some of the results, I didn't read through them, I will leave that up to you.

Bucking

Jerking

The point was not to pick on the OP, but to educate him, so he doesn't think gas, and thinks Fuel or diesel. One the worst things is to pull into a fuel station and gas up a diesel!!!

Here in Oregon, I make sure the fuel jockey grabs the correct hose when fueling.

Probably better way's to educate someone without humiliating them on a public forum. Maybe a simple OBTW or PM would have been better.

I started to read some of the links I posted for the OP to read... Can't believe how some of the members jump on people looking for help with their Rams.

[Bionic_Man]

Bigfoot affair wrote:
Nice guy's. A guy is here asking for help with his new Ram and some the Ram fans jump on him for is terminology... Had he posted about how awesome the truck is doing there wouldn't have been any of that....

UNREAL!

OP, I did a quick search over a the Cummins forum for you.. Here are some of the results, I didn't read through them, I will leave that up to you.

Bucking

Jerking

Have to agree with you here.

I have the 68RFE in my truck, and it does not do what the OP seems to be describing. If it were me, I would take it in and have the truck checked out. Pretty simple to do.

[rhagfo]

Bigfoot affair wrote:
Nice guy's. A guy is here asking for help with his new Ram and some the Ram fans jump on him for is terminology... Had he posted about how awesome the truck is doing there wouldn't have been any of that....

UNREAL!

OP, I did a quick search over a the Cummins forum for you.. Here are some of the results, I didn't read through them, I will leave that up to you.

Bucking

Jerking

The point was not to pick on the OP, but to educate him, so he doesn't think gas, and thinks Fuel or diesel. One the worst things is to pull into a fuel station and gas up a diesel!!!

Here in Oregon, I make sure the fuel jockey grabs the correct hose when fueling.

[Bigfoot_affair]

Nice guy's. A guy is here asking for help with his new Ram and some of the Ram fans jump on him for is terminology... Had he posted about how awesome the truck is doing there wouldn't have been any of that....

UNREAL!

OP, I did a quick search over a the Cummins forum for you.. Here are some of the results, I didn't read through them, I will leave that up to you.

Bucking

Jerking

[goducks10]

rhagfo wrote:

goducks10 wrote:

rjstractor wrote:

rhagfo wrote:
The OP real issue is he is pressing on the Gas, my Ram has a Throttle!

Diesel engines don't have throttles. Maybe "accelerator" is the correct term? 😉

I guess you can call it either.
http://www.genosgarage.com/product/dodge-cummins-throttle-position-sensor-mopar-53034160/engine-sens...
http://www.genosgarage.com/product/ram-mopar-accelerator-petal-throttle-position-sensor-68043161/eng...

My point is for those new to diesel, shoud change their thought process for Gas station, Gas pedel, gas tank, to at least replace the term "GAS" with the term "FUEL"
Saves the issues with putting Gas in the Fuel tank of your new Diesel! :S

I guess I'll "throttle" back my observations a bit. Don't want to "fuel" the nebs with too much info. 😉

[rhagfo]

goducks10 wrote:

rjstractor wrote:

rhagfo wrote:
The OP real issue is he is pressing on the Gas, my Ram has a Throttle!

Diesel engines don't have throttles. Maybe "accelerator" is the correct term? 😉

I guess you can call it either.
http://www.genosgarage.com/product/dodge-cummins-throttle-position-sensor-mopar-53034160/engine-sens...
http://www.genosgarage.com/product/ram-mopar-accelerator-petal-throttle-position-sensor-68043161/eng...

My point is for those new to diesel, shoud change their thought process for Gas station, Gas pedel, gas tank, to at least replace the term "GAS" with the term "FUEL"
Saves the issues with putting Gas in the Fuel tank of your new Diesel! :S