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Old 02-26-2019, 11:18 PM   #1
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Exhaust Brake Experiences?

So Iím thinking and that usually gets me in trouble.

So letís say, (1) for instance, you are going down a mountain and loaded up. Say you are coming down from the Eisenhower Tunnel.

And (2) it comes up a big rain storm. So, Iíve been thinking you wouldnít want the exhaust brake engaged in that case, is that true?

What about putting it in 4 wheel drive and using the exhaust brake? Would that prevent like the rear wheel from locking up?

In other words whatís the best way to tow down a mountain in a rain storm?

Thanks for any replyís!
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Old 02-26-2019, 11:55 PM   #2
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I would use 4 Hi and exhaust brake but it is possible for the trailer to keep pushing so service braking would have to be used as well. Depending on speed and how fast you are going. I would manually downshift to a maximum gear to hold speed as well. I went down a 15 percent grade that was wet last summer and use hill descent as well. Covered the trailer brakes with my right hand too.

I used 4 by 4 and exhaust brake and tow/haul on ice. Works like a charm when not towing too.
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Old 02-27-2019, 09:22 AM   #3
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I have come down from the Eisenhower tunnel in a rain storm several times. The big key is to slow down, have good tires, and do not brake hard if possible. The exhaust brake is great, and make sure your at the speed you want before going downhill. Also make sure the trailer brakes are set right.

I see no reason to be in 4 wheel drive, unless you have all wheel drive. You can cause unnecessary wear, and possible damage, with minimal, if any gain (disregarding snow...etc).
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Old 02-27-2019, 10:24 AM   #4
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With the 2013.5 Ram, 6.7L Cummins engine they have a two stage exhaust brake. When set in the first stage ( if I remember correctly) and in T/H mode with cruise control set the truck will maintain the set speed down hill. Now when the second stage is more aggressive and will definitely stop you.

I have traveled I70 up and through the Eisenhower Tunnel with my truck in 5 gear and in T/H mode with my exhaust brake on. This did very will in maintain the speed limit for me going down hill. I have a 2008, 6.7L Cummins and this has the original exhaust braking system. I use this combination all of the time in mountains would not pull a trailer without an exhaust brake system.
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Old 02-27-2019, 11:10 AM   #5
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Just remember that the EB is a supplement to the braking system, not a replacement. I cant fathom needing 4x4 on wet roads when using the exhaust brake, just use common sense. I typically disengage on snowy/icy roads however. Otherwise mine is on all times the truck is moving.
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Old 02-27-2019, 12:04 PM   #6
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Quote:
Originally Posted by Jim34RL View Post
With the 2013.5 Ram, 6.7L Cummins engine they have a two stage exhaust brake. When set in the first stage ( if I remember correctly) and in T/H mode with cruise control set the truck will maintain the set speed down hill. Now when the second stage is more aggressive and will definitely stop you.
Correct, but opposite. Full exhaust brake with the first push.

As for the OP's concern, it's valid but I would not personally be concerned with using the exhaust brake in the rain. Hard packed snow and ice I probably wouldn't use it on the highway but I do use it sometimes in town in the winter, mostly just to keep the VGT moving.
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Old 02-27-2019, 06:33 PM   #7
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Hey everyone appreciate the responses. I was worried in rain that the exhaust brake could lock the rear tire since traction is reduced. Iíll try it without 4WD and see if I notice anything. Iíve been told over my life that one can use 4wd on wet roads in rain and not hurt the system. I get you never want it activated on dry pavement. I had a 2500 Suburban damaged by a precious owener and I had to replace front diff on that truck. $$$$.

The first Ram I had was a 2008 MegaCab. Freakin miss that truck. It seemed like that truck had a stronger exhaust brake when not towing.
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Old 02-27-2019, 06:36 PM   #8
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Hey everyone appreciate the responses. I was worried in rain that the exhaust brake could lock the rear tire since traction is reduced. Iíll try it without 4WD and see if I notice anything. Iíve been told over my life that one can use 4wd on wet roads in rain and not hurt the system. I get you never want it activated on dry pavement. I had a 2500 Suburban damaged by a precious owener and I had to replace front diff on that truck. $$$$.

The first Ram I had was a 2008 MegaCab. Freakin miss that truck. It seemed like that truck had a stronger exhaust brake when not towing.
I don't see anywhere what truck you drive. A few guys with 2018s have mentioned the exhaust brake/trans programming seems much improved.
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Old 02-27-2019, 07:56 PM   #9
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Yeah I have a new 2018 Ram CC SWB SB HO BigHorn with the B&W companion hitch and a new 2019.5 Cedar Creek 34IK. Looking at adding airlift 5000 and aux fuel tank.
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Old 02-27-2019, 08:02 PM   #10
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Technically I have been told and read (looking at big trucks AKA fire trucks) the EB is NOT recommended in wet weather or snow / ice. That being said, I have used the EB while towing in moderate to heavy rain without issues. But as said, you need to slow down.
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