What's my exhaust doing?

[kthaxton]

With idle-up (either manually set, or auto when really cold), the EB does work.

 

[Newsa]

With idle-up (either manually set, or auto when really cold), the EB does work.

Thanks for helping me understand, I wondered about that statement in the manual since I first read it over 2 years ago.

But, I think the EB turns fully off if you press the accelerator pedal? ????

For optimal fuel mileage?

But applies a load at high idle when no pedal is applied?

 

[kthaxton]

But, I think the EB turns fully off if you press the accelerator pedal? ????

Not sure I'm following you......because, of course the e-brake turns fully off when you press the accelerator, or do you mean will it deactivate the switch when you push the accelerator?

For optimal fuel mileage?

Can't answer this question without understanding your first one.

But applies a load at high idle when no pedal is applied?

The e-brake will be activated in idle under two scenarios (that I've observed anyway). If you manually activate the idle up feature AND activate the e-brake button....OR.....if it is really cold outside (I don't know at what temp) and you start a cold engine and idle-up happens automatically to aid warm up, AND engage the e-brake button.

 

[kthaxton]

I should clarify that my other post was directed at Alphonse when he stated he doesn't see anything happen on the PID when the EB is engaged. I was pointing out that it works, only in conjunction with the idle-up feature, whether manually put in idle-up, or automatically when it is really cold.

 

[Newsa]

I was asking if the ebrake continues to work against the engine if you depress the accelerator up to 1000-1100 RPM's? Or if the fact that there is input from the accelerator disengages (not the button/the drag from the EB) the EB until you take you foot off?

It seems if the EB waited until 1150 RPM's to disengage, it might drag down fuel economy?

I think any drive-by-wire input from the accelerator pedal fully disengages the EB until the accelerator input goes away?

 

[kthaxton]

I was asking if the ebrake continues to work against the engine if you depress the accelerator up to 1000-1100 RPM's? Or if the fact that there is input from the accelerator disengages (not the button/the drag from the EB) the EB until you take you foot off?

nooooo, of course it doesn't engage the brake when you are trying move, that would be....well, silly.

It seems if the EB waited until 1150 RPM's to disengage, it might drag down fuel economy?

Yep, brakes and acceleration are not conducive to low mileage.

When the EB and idle up are active, they both disengage as soon as you touch the brake pedal.....which of course you have to do before shifting into Drive or Reverse.

 

[Newsa]

Look at my sig, even though it's a C&C, I believe if you purchase the hardware for the clutch pedal, it's available on your ECM if turned on.

What hardware is required. I'm going to check this out before my next summer vacay.

 

[gsbrockman]

nooooo, of course it doesn't engage the brake when you are trying move, that would be....well, silly.

As "silly" as a partial transmission fluid change??? :-laf :--)

 

[Newsa]

As "silly" as a partial transmission fluid change??? :-laf :--)

AND about as "silly" as a hill start that applies for an entire 3 seconds even if you try to take off in one second (or less).

 

[RVTRKN]

What hardware is required. I'm going to check this out before my next summer vacay.

It is an extra switch I believe to the clutch pedal, it's an added pole I believe that shuts down the high idle when clutch is engaged, it also may be an added switch to E-Brake. If E-Brake is not set, it won't allow feature. I just looked at my window sticker, and the only thing related in an option is the Power Takeoff Option, but it was only @ $80, and came with a relay and harness. I believe I had tech turn it on for when they delivered it to me. I did order my C&C, and expressed the need for the high idle option, but I don't remember the specifics. You might want to do a search for posts & threads back in 07.

 

[RVTRKN]

I found it, in the 2007 C&C brochure, it is listed as "DRIVER ADJUSTABLE IDLE CONTROL (Must have Power Take-off Prep)" and was optional for all packages and trim levels.

 

[Ram4Sam]

As "silly" as a partial transmission fluid change??? :-laf :--)

At least I got it.......

Sam

 

[kthaxton]

As "silly" as a partial transmission fluid change??? :-laf :--)

I said silly, not absolutely insane!

 

[RVTRKN]

What hardware is required. I'm going to check this out before my next summer vacay.

Read this thread it gives part numbers and procedures for manual equipped trucks.

http://www.cumminsforum.com/forum/0...in/139395-my-dealer-cant-enable-pto-idle.html

Also here is a screen shot of the post that maters the most in the linked thread.

 

[gsbrockman]

I found it, in the 2007 C&C brochure, it is listed as "DRIVER ADJUSTABLE IDLE CONTROL (Must have Power Take-off Prep)" and was optional for all packages and trim levels.

I've read on multiple forums over the years that the manual high idle feature is no longer offered on 4th GEN 6.7L G56 equipped pickups.

 

[AH64ID]

The ticking is the DEF pump and nozzle cycling. Thhe frist few times the system goes into re-gen there will be some "strange odors." The nice thing with the 2013 and newer trucks is that it will go into a passive Re-gen each time you drive it and get the exhaust temp high enough.

How do the '13+ trucks go into passive re-gen each time you drive it?

IIRC it takes temps around 900°-1000° F in the DPF to regen, that's a bit hotter than normal driving will achieve.

 

[Alphonse]

How do the '13+ trucks go into passive re-gen each time you drive it?

IIRC it takes temps around 900°-1000° F in the DPF to regen, that's a bit hotter than normal driving will achieve.

Confirming, I have read that it takes about 950F to regenerate the DPF. From the data I see on my truck, temperatures slightly less than that must work over an extended period. I have yet to see a DPF regeneration on my on long hauls towing.

 

[Newsa]

I've read on multiple forums over the years that the manual high idle feature is no longer offered on 4th GEN 6.7L G56 equipped pickups.

Sadly, I suspect that the PTO option was discontinued on these 4th gens with G56. And thus the high idle also.

Thanks GSBrockman & RVTRKN for your research.

Might have something to do with preserving the DMF?

 

[AH64ID]

Confirming, I have read that it takes about 950F to regenerate the DPF. From the data I see on my truck, temperatures slightly less than that must work over an extended period. I have yet to see a DPF regeneration on my on long hauls towing.

What are you using to monitor active regeneration?

 

[Bob4x4]

The 4th gen trucks can see a regen as low as 800 degrees from my experience while monitoring realtime with the factory tools