Poor drivability; 2011 Manual with 3.42 Gears

[AH64ID]

More reasons to avoid the manual transmission Ram.



My truck with six speed Aisin runs normally during regen as it does when not in a regen cycle and I have gauges will clearly indicate when it is in regen mode.



What I posted about the DMF/G-56 manual is true and accurate. Whether you wish to read it is your decision to make.

You have a C&C, very different animal when it comes to regens. As you have stated in other threads you cannot compare the C&C emissions to pickup emissions. . well I guess you can when it suits your argument

 

[schmalda]

HOBrian,

Thanks for the feedback; yes I have adjusted my shift point for the diesel. I paid close attention to my rpms recently and I'm clutching out at ~800rpms and shifting at ~2000 rpm during normal driving. Absolutely no offence taken, really appreciate the constructive feedback.



JRS,

Thank you very much for taking the time to post your experience, we've had the exact same experience. I'm hopeful that my dealer will make the same correction as your dealer did.

Can you please provide your dealer name so my dealer can contact them and maybe take the same tact?



RVTRKN,

I have the same 'stuck throttle' response you describe all of the time. I almost wrecked the truck the first time I drove in the rain because of it... ... . tires spinning w/foot off of accelerator; I clutched in and saved the truck before I ran out of counter steer..... I was halfway in the opposing lane. I did not describe this characteristic to my Mechanic but I will now given your shared input. Maybe my truck is stuck in Regen... ...



I'm an auto enthusiast, I simply love rowing thru the gears, the experience is visceral to me. Every auto I've owned has been stick so I ordered a stick... ... but I realize I'm going against the trend.

 

[KLauber]

Serious Truck Envy...

Met the OP at a McD's near York, Pa. Kicked tires and swapped lies for a while then took his truck for a test drive. WOW this is a nice truck. I want a 2011 model. Ultra nice. Drives easy, has plenty of power. I think he was so used to the V10 kick in the pants, he wasn't appreciating how a diesel power curve runs. There is nothing wrong with this truck and I would not change the rear end. His trailer is only 8000 lbs so it does not present a heavy load to the 6. 7. Running empty, the only issue he has identified is the stretched wheelbase makes the rear end too loose in wet conditions. I would keep a sack of rocks in the back or add Super Springs to reduce the wheel hop he's getting. The G56 and DMF is such a smooth shifting system its like driving a Lexus (if one had a manual).



Keep on trucking!

 

[RVTRKN]

RVTRKN,

I have the same 'stuck throttle' response you describe all of the time. I almost wrecked the truck the first time I drove in the rain because of it... ... . tires spinning w/foot off of accelerator; I clutched in and saved the truck before I ran out of counter steer..... I was halfway in the opposing lane. I did not describe this characteristic to my Mechanic but I will now given your shared input. Maybe my truck is stuck in Regen... ... .

In the lower RPM range, below 2000, there is a sluggish feel about the truck when in regen. When I feel it, I just shift at 2000 RPM to prevent the stuck throttle sensation or if I need greater RPM than 2000 then I let the throttle level out with my pedal position at where I think it should be. Kind of feels like a truck with a 2500 RPM governor. When climbing on a onramp with 22K GCVW it can be a little tricky, but I only have to worry about it when in regen.



I guess I better not allow any more updates on my ECM, just incase they changed the program to always run like that. My tech believes it was changed so the truck would produce the least amount of soot as possible. If you think about it, he has a good point, a Diesel without the DPF smog crap, when your throttling up at the lower RPM's with a heavy foot, they smoke (soot) and when at higher RPM's when you let off the throttle and engage the clutch it will give a little puff of smoke (soot) as well.

 

[schmalda]

RVTRKN,

I'm tracking you w/the ‘stuck throttle' workaround. I now do the same thing when near or at full throttle, I lighten up on the throttle for about 2 sec. just before clutching in then it doesn't overspeed. My truck does this all the time. The vehicle was flashed about a month ago but exhibited this “stuck throttle“ behavior since I took delivery in June.

How can you tell the engine is in Regen?



KLauber,

Good talking to you, thank you very much for taking the time today.



David

 

[Gonzo 1066]

I don't think you are going "Against the trend" at all . . We all need to be proud that Chrysler has the foresight to offer a manual transmission for those of us that really like the TOTAL control that the stick trans offers. There are distinct advantages to both the auto and the stick trans. IMHO

 

[RVTRKN]

I know when it goes into regen because the EB will come on when idling at a signal. But if I'm on the road and have to downshift without stopping and then go back through the gears, the only way I know is a sluggish truck in low RPM's. The first reflash it had, I would know it, because the truck would lose power for a couple of seconds (seemed like an eternity) and then would come back alive. My tech then reflashed it as soon as one became available, and that phenomena stopped, but the sluggish/sticking throttle truck still is an issue.



If I were to drive your truck, the first thing out of my mouth would be "your in regen". I hope you can get it solved, I know when my truck is in regen, it bugs the heck out of me, in fact just today it went into regen, and I immediately thought of this thread. What is your MPG, do you drive it long distances or is it a grocery getter?

 

[AH64ID]

I know when my truck is in regen, it bugs the heck out of me,

Why not keep it out of regen for good?

 

[RVTRKN]

Two words, California b#@&^%t.

 

[AH64ID]

10-4!

Time to get a small piece of property in another state

 

[NIsaacs]

This "stuck throttle" issue is nuts. It will burn the clutch on every up shift, if the engine is still pulling when you push in the clutch, it will burn as it is releasing.



Nick

 

[RVTRKN]

I'm sure it does but, never thought about it. Only when I forget about it does that happen otherwise I let the throttle hit the sensor position I have it at, then shift.

 

[schmalda]

I looked thru my Diesel Supplement Owners manual... .



The Electronic Vehicle Information Center (EVIC), on the dash, will display "Exhaust System - Regeneration Required Now" when Regen is required... ... . it goes on to say that "Exhaust System - Regeneration In Progress" will be displayed then "Exhaust System - Regeneration Completed" when it's done

I've NEVER seen any of the above messages... .

Has anyone seen these?

David

 

[RVTRKN]

I looked thru my Diesel Supplement Owners manual... .



The Electronic Vehicle Information Center (EVIC), on the dash, will display "Exhaust System - Regeneration Required Now" when Regen is required... ... . it goes on to say that "Exhaust System - Regeneration In Progress" will be displayed then "Exhaust System - Regeneration Completed" when it's done

I've NEVER seen any of the above messages... .

Has anyone seen these?

David

I have the C&C so its different, but I believe that is for when your system is in a critical condition, and needs to go into regen or damage will occur. ???????

 

[AH64ID]

I have the C&C so its different, but I believe that is for when your system is in a critical condition, and needs to go into regen or damage will occur. ???????

Correct, that's only at a DPF level of 70% (maybe 80%) or higher. Under normal circumstances the EVIC will never tell you, other than a large decrease in instantaneous mpgs.

 

[KLauber]

This "stuck throttle" issue is nuts. It will burn the clutch on every up shift, if the engine is still pulling when you push in the clutch, it will burn as it is releasing.



Nick

I only drove it about 5 or 6 miles and never observed the "stuck throttle" syndrome. Hopped the wheel going around a sharp low speed corner. I always start out in first except when the truck is facing downhill then I use 2nd.

 

[KLauber]

I looked thru my Diesel Supplement Owners manual... .



The Electronic Vehicle Information Center (EVIC), on the dash, will display "Exhaust System - Regeneration Required Now" when Regen is required... ... . it goes on to say that "Exhaust System - Regeneration In Progress" will be displayed then "Exhaust System - Regeneration Completed" when it's done

I've NEVER seen any of the above messages... .

Has anyone seen these?

David

Drive it like you stole it and you will never see the message... If it regens, you'll notice a throaty sound to the exhaust at idle that tells you its diluting the engine oil some more...

 

[RVTRKN]

Very disappointed with drivability on 2011 diesel w/manual trans.

Pulls 8k trailer over mountains with ease at 75mph but try to accelerate empty or loaded and it is absolutely pitiful. Lived with it for 8k miles with no improvement.



Took to dealer.

Went on test drive w/Lead diesel mechanic... ... his words: "this thing is a dog"... ... . "this thing does not accelerate". My sentiments exactly. Mechanic did a full diagnostic; everything in spec. Mechanic called STAR (Dodge tech support for Technicians); STAR said this is normal performance for a manual truck w/3. 42 Gears.



I found this interesting because I ordered 3. 73 Gears. Dealer verified order; it was correct, 3. 73 Gears were ordered. Dodge at first said they built the truck with the wrong gears, now they say you can’t get a 2011 manual diesel truck w/anything but 3. 42 gears... ... Never mind it’s an option in their printed catalogue, Web Site and Dealer Build software. My Dealer has been helpful and is working to make the gearing issue right.



I have lots of questions but I’d like to put one simple question to the TDR Community:

???Does anyone know of a 2011 Manual Transmission Diesel that doesn’t have 3. 42 Gears???



Thanks in advance for your response.....

Have you found out any info from the dealer on the gear ratio or the regen?

 

[schmalda]

Poor Drivability, 2011 Manual

Update:



I've been overtaken the past few months by work so progress on this issue has been slow. Since my last posting I've collected some engine vitals thru the OBD II port using some rudimentary data logging software and analyzed. Unfortunately the data logger scan time is not that fast so data is a bit choppy and I turbo boost pressure was not available.



Below is a link to a short briefing I pulled together that captures in data what I’ve been feeling in the seat of my pants. I’ve provided this document to my Dealer and they are elevating thru Chrysler’s Service Team. In parallel I’ll be working this issue directly with Cummings Engineering; I happen to work for a company that integrates thousands of V903 engines in military vehicles.



https://docs. google.com/open?id=0B8kIrM-sru8ZR3VOeE9RemEzNzA



The delayed fuel shutoff behavior to my understanding is tied to the 24V engine and is used to reduce emissions by gracefully decreasing fuel delivery. I also understand that it is common to Auto and Manual Transmission trucks; this issue may be hard to solve. My poor power delivery under full throttle conditions (3rd gear low power from standing start) I believe is tied to a bad mapping of the turbo’s variable orifice.



So to the question……Has anyone with the 24V motor / manual transmission combination realized either of these two behaviors?



Thanks,

David

 

[RVTRKN]

I feel what you logged, but only when in regen. Can the data logger determine if it's regen?