Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 09-17-2015, 11:35 AM   #11
Senior Member
 
Join Date: Jul 2014
Location: Silver Spring, MD
Posts: 957
My buddy has a 2015 with the 6.4 hemi. Just a suggestion... don't use the tow/haul at first and see how you like it. He found that with tow/haul engaged and driving up grades his truck would drop into 4th, struggle to maintain speed and then drop into 2nd and quickly gain speed, then shift into 4th again.

The next time he didn't use tow/haul and found that the trans would drop into 3rd and maintain speeds better without the higher revving in 2nd.
__________________

spoon059 is offline   Reply With Quote
Old 09-17-2015, 12:40 PM   #12
Senior Member
 
Join Date: Sep 2013
Location: South Texas
Posts: 3,952
Quote:
Originally Posted by spoon059 View Post
My buddy has a 2015 with the 6.4 hemi. Just a suggestion... don't use the tow/haul at first and see how you like it. He found that with tow/haul engaged and driving up grades his truck would drop into 4th, struggle to maintain speed and then drop into 2nd and quickly gain speed, then shift into 4th again.

The next time he didn't use tow/haul and found that the trans would drop into 3rd and maintain speeds better without the higher revving in 2nd.
What does your buddy's trailer weigh? Just curious because I was thinking of trying towing without the TOW/HAUL function activated. Right now I ALWAYS use it and I'm kind of afraid NOT to...

I was reading the manual the other day looking for something else, and here's some stuff I found:

"Automatic Transmission
The “DRIVE” range can be selected when towing. The
transmission controls include a drive strategy to avoid
frequent shifting when towing. However, if frequent
shifting does occur while in DRIVE, select “TOW/
HAUL” mode or select a lower gear range (using the
Electronic Range Select (ERS) switches).
NOTE: Using “TOW/HAUL” mode or selecting a lower
gear range (using the ERS switches) while operating the
vehicle under heavy loading conditions will improve
performance and extend transmission life by reducing
excessive shifting and heat build up. This action will also
provide better engine braking.
When towing a loaded trailer up steep grades at low
speeds (20 mph [32 km/h] or below), holding your
vehicle in first gear (using the ERS switches) can help to
avoid transmission overheating.
If you regularly tow a trailer for more than 45 minutes of
continuous operation, then change the automatic transmission
fluid and filter(s) as specified for police, taxi,
fleet, or frequent trailer towing.. Refer to “Maintenance
Schedule” for the proper maintenance intervals.
NOTE: Check the automatic transmission fluid level
before towing (6-speed automatic only).
Tow/Haul Mode
To reduce potential for automatic transmission overheating,
turn the “TOW/HAUL” feature ON when driving in
hilly areas, or select a lower gear range (using the
Electronic Range Select (ERS) switches) on more severe
grades."


I found this section particularly interesting:

"Electronic Range Select (ERS) Operation –
Six-Speed Transmission
The Electronic Range Select (ERS) shift control allows the
driver to limit the highest available gear when the shift
lever is in the DRIVE position. For example, if you shift
the transmission into 3 (third gear), the transmission will
not shift above third gear, but will shift down into second
and first gears normally.
Use of ERS (or TOW/HAUL mode) also enables an
additional underdrive gear which is not normally used
during through-gear accelerations. This additional gear
can improve vehicle performance and cooling capability
when towing a trailer on certain grades. In ERS mode,
gears 1 though 3 are underdrive gears, and ERS 4 is direct
drive. ERS 5 and 6 (Overdrive gears) are the same as the
normal fourth and fifth gears."
__________________

__________________


2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)

Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
Camper_bob is offline   Reply With Quote
Old 09-17-2015, 01:56 PM   #13
Senior Member
 
Jayson 197's Avatar
 
Join Date: Sep 2014
Location: Sacramento
Posts: 112
Congrats on the order!! Post pics of your new truck when you take delivery.
__________________
2015 Jay Flight 26RKS Elite
2007 Tundra DC 4wd
Jayson 197 is offline   Reply With Quote
Old 09-17-2015, 05:27 PM   #14
Senior Member
 
Join Date: Oct 2013
Location: Tuscola
Posts: 208
Thanksgiving the info everybody.

Camper Bob, what kind of fuel mileage are you getting, empty and towing?
__________________
2014 Eagle 34.5 BHTS FW
2016 Ram 2500 Laramie 4x4 Megacab
6.4L HEMI, 4.10 Rearend,
bed cam, air suspension
B&W Companion, Reese Airborne Sidewinder
Tgallagher is offline   Reply With Quote
Old 09-18-2015, 07:36 AM   #15
Senior Member
 
Join Date: Sep 2013
Location: South Texas
Posts: 3,952
Quote:
Originally Posted by Tgallagher View Post
Thanksgiving the info everybody.

Camper Bob, what kind of fuel mileage are you getting, empty and towing?
Empty, about 14-16 in town, almost 20 hwy (70-75 mph). I call it "in town" but it's probably not the same "in town" others have. I live out in the country and work in a small town, so 2/3 of my 7 mile daily commute is country roads, the rest is small town city streets.

Towing (2014 28BHBE, pretty heavy, nowhere near max), around 9 (60-70 mph). I've had it up around 10 before towing slow on flat back roads, but really with this truck slowing down doesn't save a whole lot of fuel. Some, yes, but it's not terribly dramatic.

Lifetime average right this minute (at 5983 miles and according to my "Gas Cubby App" with about 1/3 or more towing miles) is 10.9, but I just got back from a trip where I towed into the wind both ways, and it was kind of hilly.

For MPGs, when compared to the 2012 GMC Sierra 1500 I traded on this truck, it does a little worse on the highway and city and a little better towing. As far as all around utility and hauling/towing, it's A LOT better. I really do love my truck!
__________________


2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)

Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
Camper_bob is offline   Reply With Quote
Old 09-18-2015, 11:06 AM   #16
Senior Member
 
Join Date: Oct 2013
Location: Tuscola
Posts: 208
Good info guys. Thanks...
__________________
2014 Eagle 34.5 BHTS FW
2016 Ram 2500 Laramie 4x4 Megacab
6.4L HEMI, 4.10 Rearend,
bed cam, air suspension
B&W Companion, Reese Airborne Sidewinder
Tgallagher is offline   Reply With Quote
Old 09-23-2015, 08:04 PM   #17
Senior Member
 
Join Date: Jul 2012
Posts: 206
Quote:
Originally Posted by SparkDr View Post
Stay away from the rv.net forums if you're a fan of this truck and motor combination. They're crucifying it over there for it's poor performance on a competitive / comparative test against the other brands. I don't have a dog in the hunt, but it seems to me that it's unfairly getting a bad rap over this one test in particular. As far as I'm concerned, if the truck works for what you bought it for then it's the right truck for you and your application...end of story. Enjoy the new rig.

Nail on the head there. I have a SD 250 with the 6.2 and love it because it suits my needs perfectly. It cracks me up how truck owners of one persuasion or another will get all worked up because one tuck is a couple of seconds slower or faster than another when racing up a test hill. In real life towing I don't think a few seconds matter.

Enjoy your new truck.
__________________
2013 Jay Flight RLS
2014 Ford F250 Super Duty
Reese HP Dual Cam
hbravo is offline   Reply With Quote
Old 09-23-2015, 08:47 PM   #18
Senior Member
 
Join Date: Jul 2015
Location: Mid-Mi
Posts: 1,230
Congrats on the truck!!!

While I am happy with my Chevy at this point, the 6.4 does intrigue me!!! Lol

Quote:
Originally Posted by hbravo View Post
In real life towing I don't think a few seconds matter. Enjoy your new truck.
Towing or not, it is unfortunately the way for most this day and age!

Concerning the towing tests that were mentioned, I think it would be interesting for them to be done (TFL tests) twice, once as they do now, and another that is more like "real world towing" by manually selecting gears as most of us would and do!
__________________
Bubba J- '13 Chevy Silverado 2500HD LT CCSB 4x4 6.0

'16 Jay Flight 32 BHDS ELITE 32 BHDS MODS Reese DC HP

WDH SET UP. HOW A WDH WORKS. CAT SCALE HOW TO.
need-a-vacation is offline   Reply With Quote
Old 09-24-2015, 05:18 AM   #19
Senior Member
 
TWP723's Avatar
 
Join Date: Mar 2015
Location: Abingdon
Posts: 3,269
My honest opinion is...that truck is a beast! It's beautiful in and out and more than capable of being a good TV! Good luck and congrats!!
__________________
2013 Jayco Eagle 328 RLTS
2013 Ford F350 6.7L 4x4 CCLB
W/Air Lift air bags (front & rear)
Equal-I-Zer™ WDH
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)
TWP723 is offline   Reply With Quote
Old 09-24-2015, 07:56 AM   #20
Senior Member
 
Swinepartner's Avatar
 
Join Date: Feb 2014
Location: Zebulon
Posts: 169
The more I read about the 6.4, the more I'm impressed. I've always been a bowtie guy, so it's between the 6.0 and the 6.4 so far. We have the 28BHBE and no plans to upgrade in the next 8 yrs or so when the last one is in college. Thanks to those who keep us posted on the 6.4.
__________________

__________________
Kevin "Corndog" Cameron
2016 Ram 2500 CTD TRADESMAN
2015 Jayflight 28BHBE
Swinepartner is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 11:47 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.