Originally Posted by Riverside Jeep
2019, 2500 4x4,towing a 25' travel trailer, The exhaust brake does not work in first gear no matter what the rpm's are. Does it work on anyone else's? Also this transmission seems to hunt 4-5-6 all the time in the hills towing. A lot of times it only holds 4 or 5 for only a split second,
Can the dealer help that sort of thing?
I frequently tow my trailer down a steep grade that is 5 miles long with a comfortable speed of 10-20 m.p.h. Just wondering.
Greetings @Riverside Jeep
I'm no mechanic but here's what I learned from CumminsForum.con about exhaust braking. . .
* Torque converter must be locked for exhaust brake to engage.
* If engine speed drops below 1100 RPM exhaust brake will disengage.
* When slowing from highway speeds expect exhaust brake to (finally
) disengage at about 17 MPH.
* Obviously run with Tow/Haul mode on.
I read a post here on CumminsForum.com a few months ago that the 1100 RPM exhaust brake dropout speed can be programmed down to 800 RPM.
I think it was an AlfaOBD thing. Use the search function for more info on that.
And Riverside Jeep
, one last thing here...
I'd be real, REAL
interested in hearing what the dealer had to say about this issue.
Honestly, I can hardly wait.
Please keep us posted.