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Downshifting automatic transmission.

Discussion in '2nd Gen. Tacomas (2005-2015)' started by wallnerfe, Apr 8, 2010.

  1. Apr 8, 2010 at 4:52 AM
    #1
    wallnerfe

    wallnerfe [OP] Member

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    Wonder if anyone has experience driving the mountains with their automatic Tacomas. I work seasonally for the Forest Service in the Bighorn National Forest in Wyoming. I'm stationed at a ranger station, altitude 7,600 feet. Once a week I come down the mountain for groceries. The 20 mile twisting decent calls for lower gears with grades varying between 6% and 7%. In order to keep speeds between 25 to 35 MPH, you must regularly shift between 2nd and 3rd gears. I try to keep braking to a minimum to avoid burning up brakes. There are extended periods of coasting in these gears and shifting up and down to maintain safe speeds. I have plenty of experience driving these road in my Ford F-250 Forest Service government rig. However, this will be my first season in the mountains with my new 2010 TRD Off Road, V-6 Taco. How tough is the Tacoma automatic transmission for this type of duty? Thanks for your comments.
     
  2. Apr 8, 2010 at 5:14 AM
    #2
    mortuusangelus

    mortuusangelus Well-Known Member

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    I've got a first gen and the transmission puts up with an awful lot of abuse. I've coasted down some rather nasty grades in 4-lo in first gear, to keep the truck going straight and not lock up the brakes and it hasn't broken, so I would think 2nd/3rd isn't going to hurt yours. :)
     
  3. Apr 8, 2010 at 6:03 AM
    #3
    Jason'sLawnCare

    Jason'sLawnCare Prepared for Bambi

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  4. Apr 8, 2010 at 6:55 AM
    #4
    cinch

    cinch Member Extraordinaire

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    I go down a very steep winding 3 mile long road every day on my way to work. My FJ Cruiser (which has the same transmission) went down in second gear every day. It had 90,000 miles on it when I traded it in and it was still going strong.
     
  5. Apr 8, 2010 at 7:03 AM
    #5
    trd09

    trd09 Well-Known Member

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    same tranny as the 4.7 tundra....these trucks are pretty tough
     
  6. Apr 8, 2010 at 10:21 AM
    #6
    05Moose

    05Moose Middle-Aged Member

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    If it was bad for the tranny, your truck wouldn't have come with engine braking to begin with. If you haven't experienced the engine braking, find a decent downhill slope where you're accelerating while coasting doing about 45-50 mph. Step on the brake slowly and you'll feel the engine braking kick in by automatically downshifting and holding it there. It's a nice feature of these taco's and cuts off the fuel completely to the engine saving you gas too.
     
  7. Apr 8, 2010 at 10:28 AM
    #7
    BlueT

    BlueT Well-Known Member

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    To use engine braking your tranny needs to be in 4 or less (atleast thats what 07 needs). If you put in D it will not slow you down. If your truck is loaded and you can cope with lower speeds run on 3rd.
     
  8. Apr 8, 2010 at 11:37 AM
    #8
    wallnerfe

    wallnerfe [OP] Member

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    Thanks for all your comments. I didn't know that the Tacoma V-6 automatics are equipped with the same transmission as the 4.7 Tundas! Very nice.
     
  9. Apr 8, 2010 at 10:06 PM
    #9
    nuckinfuts

    nuckinfuts NyQuil on the rocks.

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    You're doing it right, I crept down Teton Pass in 2nd gear in January. It saves your brakes and the trans handles it just fine.
     
  10. Apr 8, 2010 at 10:17 PM
    #10
    Kyouto42

    Kyouto42 Iron Beard

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    I shift mine all the time... though not for hills just because I miss my manual and like to punch it. I've shifted towing over Grant's Pass in Oregon though... never missed a beat. Shifted 3-4 mostly on that averaging near 70mph. (I-5, 6-7% grades).
     
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