Coast Resorts Open Roads Forum: Class C Motorhomes: Tow/Haul Feature
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derh2o

Vancouver, WA, USA

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Posted: 06/09/14 10:35pm Link  |  Quote  |  Print  |  Notify Moderator

since these RVs are on a van chassis, due to the weight, i am thinking i am hauling all the time. So i leave it on all the time when i am not on a freeway. Of course i do turn it on when going up or down hills. A thought about cruise control. keep in mind that if a medical emergency should happen, the RV would just keep going at the speed it was set. it would be much more difficult for a co-pilot to control and bring to a safe stop. i never use cruise control,even in my car with or without a co-pilot.


Dean & Melinda
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Bobbo

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Posted: 06/10/14 08:31am Link  |  Quote  |  Print  |  Notify Moderator

My MH weighs so much, even when not towing, that I use Tow/Haul whenever I am driving it.


Bobbo, Linda and the furry kid (45 pound rescue)
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mgirardo

Brunswick, GA

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Posted: 06/10/14 11:08am Link  |  Quote  |  Print  |  Notify Moderator

I generally don't use it up and down I-95 here on the east coast, but if I head west and it gets hilly, I do use it. Just set it and forget it.

derh2o wrote:

A thought about cruise control. keep in mind that if a medical emergency should happen, the RV would just keep going at the speed it was set. it would be much more difficult for a co-pilot to control and bring to a safe stop. i never use cruise control,even in my car with or without a co-pilot.


On my 2008 model year E450, there's a cancel button on the right side of the steering wheel, much easier for my wife to hit that then try to get to the brake pedal with me in the driver's seat. Our 1999 Ford Taurus and 2000 Nissan Xterra also have cancel buttons right on the steering wheel.

-Michael


Michael Girardo
2017 Jayco Jayflight Bungalow 40BHQS Destination Trailer
2009 Jayco Greyhawk 31FS Class C Motorhome (previously owned)
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pnichols

Santa Cruz Mountains

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Posted: 06/10/14 11:36am Link  |  Quote  |  Print  |  Notify Moderator

This is just speculation on my part, but ... leaving an E350/E450 in the tow-haul mode just might provide slightly better RV gas mileage.

This would result from the transmission's torque converter slipping less under acceleration conditions. Torque converter slippage actually wastes energy ... from the gas that you buy.

* This post was edited 06/10/14 11:57am by pnichols *


Phil, 2005 E450 Itasca 324V Spirit

Capt.Storm

Brockport NY.

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Posted: 06/10/14 11:44pm Link  |  Quote  |  Print  |  Notify Moderator

I use it just about all the time.

Rolin

Oregon

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Posted: 06/11/14 02:20pm Link  |  Quote  |  Print  |  Notify Moderator

For the larger motorhomes it may be best to leave tow haul on all the time. For us, with a 26ft E450 B+, it seems like the tow haul reduces gas mileage because it shifts down more aggressively and stays in the lower gear longer. I try to keep ours in overdrive as much as possible and only use tow haul as needed.

Tow haul does seem to give better performance because it keeps the rpms in the power zone more of the time.

I have no idea of any impact that the use or non-use of tow haul has on engine or transmission longevity. I assume it makes no difference.

Just one persons un-educated opinion.

RVWithTito

Poulsbo, WA, USA

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Posted: 06/12/14 11:54pm Link  |  Quote  |  Print  |  Notify Moderator

I use it most of the time...towing or not towing. You can leave it on or use it on-demand.

When I want some help slowing down, I just push the button and give the brakes a little tap. It will kick in and downshift accordingly. It is VERY useful on steep downgrades coming out of the mountains and eliminates the white knuckle effect.

Using it while cruise control is enabled is fine.


2007 Four Winds 31F Class C; Ford E450 Chassis; 250 Watts Solar;

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