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Old 01-01-2015, 06:00 PM   #15
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Never suspect that everyone else's experience is exactly the same as your own. That way lies trouble. Verify, verify, verify.
On the Rams all you have to do is let off on the skinny pedal. If your in cruise control it will work without having to do anything.
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Old 01-01-2015, 06:06 PM   #16
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I suspect that is due to the big rig heritage of the Cummins engine. In every big rig I drove, and I've driven everything but a Peterbilt, and every major engine manufacturer at least for a few months, my experience is that activation of the engine brakes in a big rig does not activate the brake lights. When I was driving without a trailer, and I used my engine brakes (rarely, actually) I would pull down on the trailer brake lever on the steering wheel just to activate the brake lights. Not because it helped braking, but increased safety.

And just as a data point, the Cummins engine was the one that was the most trouble free for me, but this is only anecdotal evidence, and even then it is only anecdotal evidence of my faulty memory.
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Old 01-02-2015, 09:28 AM   #17
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Since exhaust brakes on pickup trucks use the turbo for the braking effect, I wonder if the increased loading might cause more wear or shorter life of the turbo. Has anyone read any reports on this matter?
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Old 01-02-2015, 09:36 AM   #18
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Just bought a 2014 ram 3500 drw crew cab with the 6.7, aisen tranny, 4:10 gears...as you all know it comes with an exhaust brake..question is since it is my daily driver do any of yall out there run with the exhaust brake on when not pulling? Is this a good practice or not? And why?
Did you read the owners manual? In the manual the exhaust brake operation is explain in full detail and how to use both methods of using the exhaust braking. Such as the speed control feature or the more aggressive exhaust braking that the VGT turbo will provide for you.

I have an 08 with just the first gen exhaust braking feature with 80,000 miles on the truck; the brake is use continuously. I will use the brake to warm the truck up by engage the high idle feature and setting the cruse control to 1100 RPM's during the winter months. The brake will also self engage when idling for 5 min's or so and not any movement of the truck with the coolant below a set temp and the ambient air temp is below a set point also.

This is all in the Diesel Supplement book or in the owners manual for your Ram.

Jim W.

PS: it is an AISIN Transmission.
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Old 01-02-2015, 09:46 AM   #19
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Since exhaust brakes on pickup trucks use the turbo for the braking effect, I wonder if the increased loading might cause more wear or shorter life of the turbo. Has anyone read any reports on this matter?
Just the opposite since some of the EGR is routed through the Turbo the exhaust braking will help prevent the turbo from sooting up and causing the sliding sleeve from stick in the turbo. This is a major issue on the early 6.7L Cummins engines when users did not engage the exhaust brake and you would receive the dreaded P2262 CEL.

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Old 01-02-2015, 02:28 PM   #20
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Yes it is the aisen tranny
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Old 01-02-2015, 06:13 PM   #21
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Yes it is the aisen tranny
OK, at least its not an ah tranny.
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Old 01-07-2015, 02:49 PM   #22
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Exhaust brake and Tow Haul on ALL the time!
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Old 01-10-2015, 08:39 PM   #23
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My Ram will initiate the exhaust when l let off the throttle. The only time it does not is when l am in cruise control then l either have to step on the brake slightly or flip off the cruise to engage the E B . My K W with a Cummins and a jake work the same way.
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Old 01-11-2015, 09:50 AM   #24
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If you put the EB in the auto position (
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Old 01-11-2015, 09:52 AM   #25
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If you put the EB in the auto position (
The 2nd push of the button, while in cruise control it will maintain your speed by braking. It's not perfect, but it works.
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Old 01-12-2015, 09:52 AM   #26
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The 2nd push of the button, while in cruise control it will maintain your speed by braking. It's not perfect, but it works.
This is only on the newer ones. 14 and 15 I think. My 12 will not use the brake in cruise.
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Old 01-12-2015, 10:47 AM   #27
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Yep, your right.
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Old 01-12-2015, 10:56 AM   #28
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When decending a grade with cruise control on manually select the gear you would come up that same grade in. The cruise and exhaust brake work well like that.
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