Reply
 
Thread Tools Display Modes
Old 10-02-2012, 12:54 PM   #1
Member
 
Join Date: Jan 2011
Location: Reynoldsburg, Ohio
Posts: 34
TT pushing truck

When going downhill it seems the TT is pushing the truck, getting high rpm's. Sounds like the truck is screaming. No problem uphill
2009 Ford F150
Rockwood 2703ss
__________________

__________________
Lady Campers
Tater (grandma yorkie)
Keagan (baby yorkie)
Bandit7 is offline   Reply With Quote
Old 10-02-2012, 01:23 PM   #2
Moderator Emeritus
 
Dave_Monica's Avatar
 
Join Date: Sep 2007
Location: Ontario, Canada
Posts: 4,329
If you're using the tow/haul feature and cruise control, the transmission will downshift (higher rpm) to try to reduce the speed when going downhill. Disengage the tow/haul or cruise control if don't you want to downshift, or apply the brakes to slow to 5 mph less than you want to go, release the brakes and allow speed to increase, then repeat the process. Do not constantly apply the brakes as they will overheat. On steeper grades I select 3rd gear on the trans to help control downhill speed.

Dave
__________________

__________________


Nights camped in 2013 - 55, 2014 - 105, 2015 - 63
Dave_Monica is offline   Reply With Quote
Old 10-02-2012, 02:54 PM   #3
Senior Member
 
ironj's Avatar
 
Join Date: May 2012
Posts: 1,368
yup....the truck is "compression braking"....ie using compression from the engine to slow the vehicle/trailer so you dont have to ride the brakes to slow possibly overheating them on long decents....as each stroke of the piston creates a small braking effect, the more rpm the more braking effect you will get. So it is more effective at higer rpm....


its works smilar on a diesel, but not quite exactly
__________________
2015 F350 Platinum Fx4 6.7 Diesel Dually. B&W turnover, B&W Companion, air bags and wireless controller.
2015 Heartland Road Warrior 420 Rt
2012 f250 Fx4 6.7 Diesel crew cab tinted n tuned
2012 lacrosse 318bhs touring- sold
ironj is offline   Reply With Quote
Old 10-04-2012, 07:46 PM   #4
Senior Member
 
Join Date: Jun 2012
Posts: 361
I had a 09' F150 pulling a similiar camper and never had any issues like that and it was always in tow haul as it should be.I did feel it slow the truck down but with very little increase in RPM. You do tow in drive and not a lower gear like 3rd? (that is not meant to be insulting) I am not sure ironj but I think the F150's uses the transmission to brake and not compression.
__________________
pwrstroke2012 is offline   Reply With Quote
Old 10-05-2012, 08:46 AM   #5
Member
 
Join Date: Jan 2011
Location: Reynoldsburg, Ohio
Posts: 34
Truck is in drive & tow haul on, no cruise control on
3.55 ratio
__________________
Lady Campers
Tater (grandma yorkie)
Keagan (baby yorkie)
Bandit7 is offline   Reply With Quote
Old 10-05-2012, 08:54 AM   #6
Moderator Emeritus
 
MtnGuy's Avatar
 
Join Date: Sep 2008
Location: Shenandoah Valley
Posts: 9,274
If you can, manually shift the transmission to the same gear used to get up the other side. That used to be the rule for truckers before the advent of the Jake Brake.

Dave_Monica has some good advice.
__________________

Chap , DW Joy, and Fur Baby Sango
2017 F350 Lariat CCSB, SRW, 4x4, 6.7 PS
2017 Grand Design Reflection 337RLS
MtnGuy is offline   Reply With Quote
Old 10-05-2012, 09:02 AM   #7
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,157
Quote:
Originally Posted by Bandit7 View Post
Truck is in drive & tow haul on, no cruise control on
3.55 ratio
That is a "high" rear end ratio, it is possible your engine is working hard trying to slow down your rig because of a mismatch between camper and truck.

Have you checked out whether your truck is actually rated to carry your camper's weight? That is an over 7500 pound camper being towed by an F150 with "middle gears". Depending on your other options your truck may not be rated for that load.
Attached Files
File Type: pdf Trailer-Life-Towing-Guide-2009.pdf (3.81 MB, 19 views)
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 10-05-2012, 10:13 AM   #8
Mod free 5er
 
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,215
Quote:
Originally Posted by Bandit7 View Post
Truck is in drive & tow haul on, no cruise control on
3.55 ratio
Take it out of tow mode. If you're like most of us, we have what we have and have to make the most of it without trading or upgrading trucks regardless of what the books, manuals say. We may have made an error in matching the trailer to the truck, but we're stuck and have to live with it and find "work arounds".
__________________

__________________
OldCoot 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 Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:21 PM.