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Open Roads Forum  >  Tow Vehicles

 > First Tow With Tundra 2010 4.6L

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Bob Landry

Austin, texas

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Posted: 07/09/10 04:57pm Link  |  Print  |  Notify Moderator

Pulled a Jayco 22FB, 4635 dry from Austin to Blanco. errain was slightly hilly with good straigt roads. Trannie seemed to shift a lot, but I suppose it's supposed to. Mileage was better at 12mpg than 9.5mpg pulling the same trailer with a 4Runner V6.And, the transmission temp guage never budged.
I may have done better mileage-wise with the 5.7L, but my towing time is small compared to overall driving time, so for in town economy, I think I made the right choice. I don't think I'm at 5000lbs with the trailer, but I don't have very far to go. The truck is rated to pull 8600lbs


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Ron3rd

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Posted: 07/09/10 05:00pm Link  |  Print  |  Notify Moderator

If you're happy the way it tows, then that sounds good to me.


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Posted: 07/09/10 05:11pm Link  |  Print  |  Notify Moderator

Sounds like a good fit.
Are you towing with the overdrive on?
If so turn it off and see if that helps with the tranny "hunting" all the time.
Enjoy your new rig.

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Bob Landry

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Posted: 07/09/10 05:12pm Link  |  Print  |  Notify Moderator

The tow/haul function is supposed to turn off the overdrive.

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Posted: 07/09/10 05:54pm Link  |  Print  |  Notify Moderator

As long as you are happy with your outfit you have all ready pleased the most important person to deal with it!!! [emoticon]


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Posted: 07/09/10 06:03pm Link  |  Print  |  Notify Moderator

Which tranny do you have? If you have the 6-speed with semi-manual as well as fully automatic setting, try towing with the stick in the S position instead of D. Not sure if tow-haul disengages OD; I do know it makes the tranny shift less often - it revs up more before downshifting than with it off.


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Bob Landry

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Posted: 07/10/10 12:45pm Link  |  Print  |  Notify Moderator

It must not disable OD.When it does shift into high, the tach is reading around 1500 rpms. it downshifts when it needs to and the trannie temp syas good, so I'm going to assume everything is working as it shout. I checked mileage going and returning and got 11-12MPG pulling through the Texas Hill Country.

E&J push'n wind

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Posted: 07/10/10 03:15pm Link  |  Print  |  Notify Moderator

Bob,

You may want to check your owners manual about towing in OD. If it is shifting alot then you may be asking to much of it in OD. If you have the 6 speed then drive in 5th, I seriously doubt you'd notice any difference in fuel mileage. Might even do better shifting less, FWIW.


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Bob Landry

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Posted: 07/09/10 07:01pm Link  |  Print  |  Notify Moderator

It appears that the tow/haul switch just changes the shift points but I'm not sure about disableing the OD. I'm just wondering if they are used together(toe/haul & "S").

E&J push'n wind

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Posted: 07/09/10 10:42pm Link  |  Print  |  Notify Moderator

TV is a Nissan and TH does not disengage OD with mine, if Toy is anything like the Nissan it doesn't, just changes the shift points based on throttle input.

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