OD on or off? - Fiberglass RV


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Old 05-10-2011, 02:30 PM   #1
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Name: Darren
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OD on or off?

Hi folks,

Our current rig is a 2007 Ford Escape V6 and 13' Boler. Our Escape has a transmission cooler and never seems labored when pulling the boler other than incredibily large hills. This spring when having both the Escape and boler inspected my machanic recommended that I lock out my OD when pulling all the time. I specifically asked about Interstates and such, and he again said, "All the time".

Do folks here ever use OD over do you turn it off when pulling? Also, do any folks here have experience pulling a scamp 16' SD and bath or Casita Spirit Deluxe 16' or 17' with either a ford escape or forester?

Thanks, this place is great!
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Old 05-10-2011, 02:59 PM   #2
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Originally Posted by darwen View Post
Hi folks,

Our current rig is a 2007 Ford Escape V6 and 13' Boler. Our Escape has a transmission cooler and never seems labored when pulling the boler other than incredibily large hills. This spring when having both the Escape and boler inspected my machanic recommended that I lock out my OD when pulling all the time. I specifically asked about Interstates and such, and he again said, "All the time".

Do folks here ever use OD over do you turn it off when pulling? Also, do any folks here have experience pulling a scamp 16' SD and bath or Casita Spirit Deluxe 16' or 17' with either a ford escape or forester?

Thanks, this place is great!
Ford says to lockout overdrive when towing in steep hills or in areas where the transmission is shifting too often, hunting for a gear.
otherwise OD is fine to for more efficiency. read the center of the last page of this PDFand also consult your owner's manual.
I use overdrive when towing with my 2.3L Escape with a 5spd manual, and while that may seem to be apples and oranges, the offset of the gears in the manual would actually be more stressful than in the automatic.
http://www.ford.com/assets/pdf/towin...CAPREsep09.pdf

Your owner's manual gives a good explanation of how to use the automatic transmission... page 200 in the "driving" section in the 2008 manual about the same in the 2006 manual... I have no 2007 manual.
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Old 05-10-2011, 03:13 PM   #3
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Name: Darren
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Thanks Floyd... Good information. I normally run with overdrive on, especially on the interstates, and turn it off as you say, when the engine seems to be searching for a gear or the terrain is particularly hilly.

I was just surprised that my machanic is recommending I leave overdrive off at all times while pulling.. This struck me as extreme, yet he is a transmission specialist so I do take his advice seriously.

Again thanks.
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Old 05-10-2011, 03:28 PM   #4
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Originally Posted by darwen View Post
Thanks Floyd... Good information. I normally run with overdrive on, especially on the interstates, and turn it off as you say, when the engine seems to be searching for a gear or the terrain is particularly hilly.

I was just surprised that my machanic is recommending I leave overdrive off at all times while pulling.. This struck me as extreme, yet he is a transmission specialist so I do take his advice seriously.

Again thanks.
We also have a Ford with Overdrive on our Motorhome and always had overdrive on except on long hills as recommended. If it hunted for gears at all I also shut OD off.

With our manual transmission in the Honda we're always in OD (5th) unless the RPMs are headed below 2000.

Norm
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Old 05-10-2011, 04:34 PM   #5
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Dodge and Chevy even Ford I think have a tow/ haul mode on the gear selector, I never turned mine off as I never play by the rules.
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Old 05-11-2011, 06:28 AM   #6
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Do folks here ever use OD over do you turn it off when pulling?
Darren,
Given the many hills in NB I usually leave it off while towing there, in other places where the terrain is more level I leave it on.
Keep track of your RPM's and gear hunting both towing and not, you should get an idea of when to use OD and when not to.
I back off on the gas and switch between the two as the terrain changes. I don't know if that is right or not, but expect to hear about it soon.

My Ranger is a 4.0l V6 with the A4LD tranny that has been weak since the day I bought it used about 8 years ago. My tranny guru says drive her till she goes then get a remanufactured, I think that will happen this year. She's 17 years old, with about 115K Km.
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Old 05-11-2011, 06:36 AM   #7
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Yeah thats pretty much my technique as well while pulling. This is year three with the boler and I have a pretty good feel for when the Escape is searching for the proper gear by now. Oddly enough, I rarely pull here in NB, but rather make the 10 minute drive to the border and either head south in the States, or straight west across Maine to Quebec and eventually Ontario.. I always turn the OD off when pulling through the mountains of Maine and Southern Quebec, but once you hit Montreal or south of Portland the tarrain really levels out..
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Old 05-11-2011, 06:44 AM   #8
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Lockout overdrive when towing in steep hills.
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Old 05-11-2011, 10:12 AM   #9
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Do you have a transmission temperature guage? I use a Scan Guage to monitor tranny temp
My Chevy circulates fluid through the transmission, and thereby the cooler, at a lower rate in D4 (overdrive).
I leave it in 3 when I'm towing. If I forget and put it in 4, the trans temp shoots up quickly even towing on the level.

BTW - I drive a Chev Trailblazer with an inline 6 and 4 speed automatic.
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Old 05-11-2011, 11:08 AM   #10
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Paul,

No unfortunately the instrument cluster is severly lacking in the escape. I've considered having an aftermarket gauge added.
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Old 05-11-2011, 12:34 PM   #11
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I leave it in 3 when I'm towing. If I forget and put it in 4, the trans temp shoots up quickly even towing on the level..
That is nice to know Paul,

What temps do you run at?
Typical while in OD, no trailer.
Typical while in 3, no trailer
And both above with trailer.

With the actual numbers we might all get a better understanding of what is happening and the potential for damage.
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Old 05-11-2011, 01:08 PM   #12
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Paul,

No unfortunately the instrument cluster is severly lacking in the escape. I've considered having an aftermarket gauge added.
If there is a car which comes standard with a tran temp gauge, I haven't seen it. If you would like to add one, however, there is a really cool aftermarket "A" Pillar attachment which can hold one, two, or three additional guages to facilitate installation and provide a nice OEM look.
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Old 05-11-2011, 01:27 PM   #13
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Name: Darren
Trailer: 1980 13' Boler
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My 87' Ford Ranger had a tran temp gauge in the factory cluster as well as a my fathers Ford Superduty.

Definitely considering an aftermarket one for the escape...
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Old 05-11-2011, 01:31 PM   #14
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I have Scan Gauge II on my truck.I have it set to read water temp,transmission temp,volts and MPG.
ScanGaugeII - Trip Computers + Digital Gauges + Scan Tool
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