Additional Dead Pedal Info

[p-Bar]

Interesting read. I own a Hyundai Genesis with 4.6 litre V8 and Aisian 8 speed trans. I have the dead pedal issue too . Doesn't happen all the time but when at a stop sign and need to bolt there is nothing there. You guys aren't alone I have put complaint in with NHTSA also . Sag thinks the canbus is fast enough but I wonder if the rules aren't in priority and as some have said maybe the emission crap is causing this. So if I am looking for a newer truck with Aisian will the dead pedal be there or not be there if I test drive? So if it's not there could it show up later?

 

[SnoKing]

Interesting read. I own a Hyundai Genesis with 4.6 litre V8 and Aisian 8 speed trans. I have the dead pedal issue too . Doesn't happen all the time but when at a stop sign and need to bolt there is nothing there. You guys aren't alone I have put complaint in with NHTSA also . Sag thinks the canbus is fast enough but I wonder if the rules aren't in priority and as some have said maybe the emission crap is causing this. So if I am looking for a newer truck with Aisian will the dead pedal be there or not be there if I test drive? So if it's not there could it show up later?

It will not be there until you let up on the go pedal and hit go quickly again! SNOKING

 

[kthaxton]

While I can't verify it, I really don't think dead pedal is the fault of the transmission.

 

[p-Bar]

Agree I think it's the communication to it

While I can't verify it, I really don't think dead pedal is the fault of the transmission.

 

[p-Bar]

Yes my Genesis does the same
thing too

It will not be there until you let up on the go pedal and hit go quickly again! SNOKING

 

[8_1gasser]

Any quick transition from braking/decel to full throttle results in the dead pedal. Thanks to the steering position sensor try to accelerate with the wheel turned, dead pedal. The biggest question is why some trucks have more lag than others? Are those that complaining slamming the pedal to floor verses those that don't? The one thing I learned is if I slam the pedal to the floor the lag will be there so it's best to ramp up the throttle. Even if it's a half second once you get the acceleration going then you can lay into and the results are much better. *A coworker just traded in his 14 RAM for a 17 with e 68rfe and he says the lag is horrible on the 17.

 

[TCDiesel]

We have 2016 Volvo VNX 300 equipped with Volvo D13 engine, Volvo I Shift AT, it has delayed pedal, The Freightliner Cascadia Cummins ISX12 With Allison/Eaton ATs has it also, TQ management in commercial use has been around for 10 years and is here to stay. IMHO buy gas or mod to remove the TQmgt. D-Max and Ford have it also its just not delayed like the 6.7, its lower TQ at X condition, the 6.7 lights good after the delay. Selling indiscriminately mandates TQmgt in todays power plants, Many driver/Owners would drive the balls off a dog if the Dog would let them, I certainly would Not want to give that power the 6.7 makes just to cover all the warranty and DL/Collision claims that many would create, + all the liberal *****'en. how unfair they been treated.

Example Someone jumps in the truck starts it with Garage door down, Puts in in D with RPMs at 1000. She/Someone does NOT push on the brake Hard, the truck surges forward 3 FT and takes out the Garage Door, or worst, hits R and someone gets crushed between Truck and wall.

 

[p-Bar]

TC I hear where you are coming from but why do some do it and others don't?

We have 2016 Volvo VNX 300 equipped with Volvo D13 engine, Volvo I Shift AT, it has delayed pedal, The Freightliner Cascadia Cummins ISX12 With Allison/Eaton ATs has it also, TQ management in commercial use has been around for 10 years and is here to stay. IMHO buy gas or mod to remove the TQmgt. D-Max and Ford have it also its just not delayed like the 6.7, its lower TQ at X condition, the 6.7 lights good after the delay. Selling indiscriminately mandates TQmgt in todays power plants, Many driver/Owners would drive the balls off a dog if the Dog would let them, I certainly would Not want to give that power the 6.7 makes just to cover all the warranty and DL/Collision claims that many would create, + all the liberal *****'en. how unfair they been treated.

Example Someone jumps in the truck starts it with Garage door down, Puts in in D with RPMs at 1000. She/Someone does NOT push on the brake Hard, the truck surges forward 3 FT and takes out the Garage Door, or worst, hits R and someone gets crushed between Truck and wall.

 

[TCDiesel]

Driving style comes into play. If your a dart pedal driver your going to experience the delay more often, than the role into drivers. When I jump into gas powered vehicles they are darty to Me. Of course jump into the Ram 6.7 and its seems like its not even moving until it lights Boost....

 

[Deleted member 995608]

I think TC has made a great point about peoples driving habits and dead pedal. All these trucks come from the same place, so I can't image it's an assembly line or programming issue.*

When I was shopping and testing driving a lot of trucks, I was determined that these trucks have a dead pedal problem, but now that I've had my own now for a year, I really don't notice it that much or none at all. I did however ad a TSB from BD diesel, so that could easily be why. Nonetheless, I believe TC is correct about people and their go fast foot habits.*

I tend to be smooth on the throttle and try to keep my speeds steady + /- *1-2 MPH. My wife however is a pedal stabber when accelerating, and she also tends to get a lazy foot, which decreases speed, and then jumps back on the throttle too pick the speed back up..... repeat the process. My head moves like a bobble head when I'm the passenger with her.*

 

[Dan_69GTX]

When folks are talking about the TSB from BD, I am assuming they are talking about this :

https://www.dieselperformance.com/s...ottle-sensitivity-booster-dodge-ford-jeep-879

Am I correct?

 

[Deleted member 995608]

^^^ Yes. It's like driving a totally different truck and it's easily removable if necessary.*

 

[TCDiesel]

Yes... Just remember all that the device does is manipulate the %. If you lift off suddenly and go fast and hard , you still will have the delay.... The 6.7 FCA mapping spikes rail pressure when letting off the Pedal aggressively, when you get back on it drops the rail pressure,. Modding the rail relieves half the lag is gone BC the fuel restrictors that are on every port in the rail are remove, ( Yes their are fuel restrictors 7 in the rail ) when these restrictors are remove even the tone at idle changes. If you find someone that's had this done they will confirm my statement.

The problem is just NOT only programing , hardware change is necessary to remove the lag/dead pedal partially , complete removal will require tuning changes + hardware upgrades.

 

[Newsa]

Been following Photowrite (James Langdon) on his arctic journey (Instagram). He had a dead accelerator pedal today, but not the usual one. His came with a throttle error code. He's at the Dealer.

I got the BD throttle booster because it sounded useful...... even if you don't have dead pedal. And it doesn't leave a footprint.

 

[Flash1034]

Yes... Just remember all that the device does is manipulate the %. If you lift off suddenly and go fast and hard , you still will have the delay.... The 6.7 FCA mapping spikes rail pressure when letting off the Pedal aggressively, when you get back on it drops the rail pressure,. Modding the rail relieves half the lag is gone BC the fuel restrictors that are on every port in the rail are remove, ( Yes their are fuel restrictors 7 in the rail ) when these restrictors are remove even the tone at idle changes. If you find someone that's had this done they will confirm my statement.

The problem is just NOT only programing , hardware change is necessary to remove the lag/dead pedal partially , complete removal will require tuning changes + hardware upgrades.

How does one mod the fuel rail to fix this?

 

[Deleted member 995608]

Been following Photowrite (James Langdon) on his arctic journey (Instagram). He had a dead accelerator pedal today, but not the usual one. His came with a throttle error code. He's at the Dealer.

I got the BD throttle booster because it sounded useful...... even if you don't have dead pedal. And it doesn't leave a footprint.

I recall reading an article he wrote about pedal/throttle adjustment. Do you remember it? I can't remember what it was about.

 

[odinjunior]

Been on the fence about buying a New Ram, but this thread has me thinking seriously about not. Nothing like plunking down $60K for a new truck and then hating to drive it..

 

[Dan_69GTX]

I'd say drive one and see what you think. What some feel is an issue, others have not even noticed. As has been mentioned, sometimes it is how you drive that it get's noticed.

And like all vehicles, each model drives differently.

 

[odinjunior]

I'd say drive one and see what you think. What some feel is an issue, others have not even noticed. As has been mentioned, sometimes it is how you drive that it get's noticed.

And like all vehicles, each model drives differently.

Been wanting a manual transmission but the on and off the pedal thing has me worried..

 

[BarryG]

I have only had my 17 with 68rfe since mid December. While I have noticed the lag at times I concur that it seems to be noticed by me only when I go to decel then back to accel quickly as many have mentioned. And as previously mentioned above the harder I hit the go pedal after the decell the more pronounced the lag. I didn't really notice it much at first but the more I drive it the more I notice it. I am generally more of a roll into it driver than a dart driver as TC put it but it does happen at times and that is when I notice it the most otherwise it is really a non issue for me. I learned to roll into it in my old 01 truck especially here in the mountains as the fueling would essentially bog it down and the black cloud would ensue if I drove it otherwise so I just got used to driving it that way and found when I did it right it would actually go faster quicker. I am more or less finding the same thing here just a different cause.