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Old 07-02-2015, 12:23 PM   #1
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How Effective are Exhaust Brakes on TVs?

Recently I test drove new diesels with stock exhaust brakes. Of course, they weren't towing anything, but engaging the EBs did not result in any noticeable braking action on the Ford or either of the lesser trucks. Must admit, the salesmen with me knew nothing, so I was pushing buttons on my own. Was I wrong to expect braking similar to down shifting a gear or two as happens with my Pacbrake even without a load?
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Old 07-02-2015, 12:41 PM   #2
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I had a Packbrake on a 2001 Ford and I get much more braking action with the Dmax . Coming done a long steep grade just set the cruise and the e brake and transmission will maintain your set speed very well. I would think the new Ford or Dodge would be the same.
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Old 07-02-2015, 12:53 PM   #3
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Will it hold back on a downgrade without a trailing load? I use the Pacbrake instead of braakes on the long descent from home to highway when not pulling.
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Old 07-02-2015, 12:57 PM   #4
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Do you mean 'Hill Descent'?
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Old 07-02-2015, 01:33 PM   #5
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LOVE my Exhaust break on my dodge:

11,000lb 5er pushing me downhill from the continental divide in Colorado ( Eisenhower tunnel at the top is at 11,200 feet )

7 mile , 7% grade down

Touched the brakes once or twice to force the Transmission to downshift, but in tow mode and Exhause brake engaged, it held the down hill speed at 45mph the whole way..... not using service brakes at all!

I mean - WOW, what a machine!

I can only imagine what the guy behind was thinking, not seeing my brake lights.
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Old 07-02-2015, 01:41 PM   #6
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I had an '11 F-250 6.7 and the exhaust brake was helpful but not great. The '14 Ram 2500 Cummins we have now has a much better exhaust brake. That being said... Both require a certain RPM range to really be effective. With the exhaust brake active I don't need to use the brakes near as much or as hard.

Read up on reviews on the exhaust brakes across manufacturers and you'll find Ford has one of the weakest. I think I read that the 2015 revision of the 6.7 was supposed to address that to some degree though. I've owned all three and really don't have a huge preference one way or the other...
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Old 07-02-2015, 01:51 PM   #7
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The Ford's need a trailer connected to notice. It all goes through the RCM and wheel sensors to determine operation. (standing still, active, etc.) You have to set the speed with the pedals. The system will maintain that speed until you press the switch again, no longer on a downhill grade or the system disables itself for cooling.
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Old 07-02-2015, 03:56 PM   #8
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Quote:
Originally Posted by TWP723 View Post
Do you mean 'Hill Descent'?
If I understand the question, yes, we drop 600 to 700 feet from our home to Highway 24, depending on which route we take to which road to the highway. Sorry if I'm not understanding your question.

"Descent" has one definition: Medical Definition of descent by Merriam-Webster "1. : the act or process of descending from a higher to a lower location <descent of the testes into the scrotum."

Couldn't resist!
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Old 07-02-2015, 04:44 PM   #9
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Quote:
Originally Posted by cekkk View Post
Will it hold back on a downgrade without a trailing load? I use the Pacbrake instead of braakes on the long descent from home to highway when not pulling.
Yes it will.
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Old 07-02-2015, 04:50 PM   #10
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I drove a new Ram 3500 DRW a few weeks ago, the exhaust brake was very noticeable to me and we were empty. Haven't tried the ford out.
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