1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

I have a hot REAR END!

Discussion in '2nd Gen. Tacomas (2005-2015)' started by pwo, Apr 12, 2012.

  1. Apr 12, 2012 at 7:13 PM
    #1
    pwo

    pwo [OP] Active Member

    Joined:
    Feb 21, 2012
    Member:
    #73341
    Messages:
    29
    Gender:
    Male
    First Name:
    Philip
    Northeast Arkansas
    Vehicle:
    RED!!! 07 4x4, trd sport
    JP Metal Fab Tie downs, Tacoma4x4 LED 4x4 switch, Weathertech mats, Ultra-gauge, Sony in dash DVD, LED cup-holders and cubbies.
    No, you cannot have pics. of my ass!!!! No homo here...

    Just saying my rear differential is pretty hot after short interstate runs at around 70mph. Is this normal for Tacoma's? You can't leave your hand on it.

    Four days ago after I got to work I noticed that I had oil pooling on the inside of my drivers side rim. I then immediately checked the differential oil level and it was about a 1/2 qt. low, so I topped it off and headed back home (1 hour away). The next day I pulled the axle shaft and replaced the inner seal, drain and change on the diff., and new rear shoes.

    But, the diff. is still getting pretty hot. This is my first taco but it doesn't give me a warm and fuzzy about it, maybe its normal for these trucks. I have only had this thing for a little over a month and never felt the temp of it before the seal blew.

    I did search not much comes up for the rear differential. Any help and reassurance will be appreciated, Thanks....
     
  2. Apr 12, 2012 at 7:45 PM
    #2
    2004TacomaSR5

    2004TacomaSR5 Nemesis Prime

    Joined:
    Apr 28, 2011
    Member:
    #55722
    Messages:
    5,081
    Gender:
    Male
    First Name:
    Jon
    Montana
    Vehicle:
    2004 Tacoma DCSB & 1980 Toyota Pickup 4WD
    Tacoma is stock and staying that way, Pickup is TBA as of now.
    Never felt my diff, not sure. I am sure they are supposed to get warm though, lots of stuff moving around in there, is it like scalding hot or what?
     
  3. Apr 12, 2012 at 7:47 PM
    #3
    wildjerseyfirefighter

    wildjerseyfirefighter I sell fishing and fishing accessories

    Joined:
    Dec 17, 2008
    Member:
    #11677
    Messages:
    7,937
    Gender:
    Male
    First Name:
    Joe
    NJ
    Vehicle:
    05 Tacoma TRD Sport
    stock, for now
    Check your rear diff breather..if its clogged it will be abnormally hot, and also causes pressure which can blow axle seals
     
    Twolines and gearcruncher like this.
  4. Apr 12, 2012 at 7:51 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    112,751,503
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2019 Rubicon 4 Door,
    4.10 gears, sliders, and lots of buttons.
    They can get pretty hot, depending on how fast you drive. They can normally get up to 150* under normal conditions.
     
  5. Apr 12, 2012 at 8:10 PM
    #5
    pwo

    pwo [OP] Active Member

    Joined:
    Feb 21, 2012
    Member:
    #73341
    Messages:
    29
    Gender:
    Male
    First Name:
    Philip
    Northeast Arkansas
    Vehicle:
    RED!!! 07 4x4, trd sport
    JP Metal Fab Tie downs, Tacoma4x4 LED 4x4 switch, Weathertech mats, Ultra-gauge, Sony in dash DVD, LED cup-holders and cubbies.
    Thought that might be it to, so I just did the breather mod today just have not driven it yet to see if it's any better.
     
  6. Apr 12, 2012 at 8:18 PM
    #6
    pwo

    pwo [OP] Active Member

    Joined:
    Feb 21, 2012
    Member:
    #73341
    Messages:
    29
    Gender:
    Male
    First Name:
    Philip
    Northeast Arkansas
    Vehicle:
    RED!!! 07 4x4, trd sport
    JP Metal Fab Tie downs, Tacoma4x4 LED 4x4 switch, Weathertech mats, Ultra-gauge, Sony in dash DVD, LED cup-holders and cubbies.
    I did not shoot it with an ir thermo as I don't have one at home. I know that around 125 you should be able to leave your hand on it with only slight stinging but very bearable. It is definitely higher than that as it did cause me to jerk back and curse. Guessing its running 150+ under normal driving.

    I have had two Jeeps and they never got this hot.
     
  7. Apr 12, 2012 at 8:22 PM
    #7
    KenpachiZaraki

    KenpachiZaraki Its Wicked Flow BITCHES!!

    Joined:
    May 24, 2009
    Member:
    #17581
    Messages:
    4,159
    Gender:
    Male
    First Name:
    Alex •﹏•
    Lubbock
    Vehicle:
    05 TRD. 325/275/365 SBD
    ALL POSER- Afe Pro Dry S drop in filter, 3" AP leaf pack, Eibach w/5100's up front, 5100's rear, Fog Light Mod, ABS off mod, Dash Light MOD, Doug Thorley Long Tube Headers, Wicked Flow Bitches MAX Muffler, 4" floods, 20", 43" light bars, 265/75/16 Hankook Dynapro ATm, oil catch can, rear diff breather relocate, Custome Sliders, SOS concepts Front bumper, Demon Eye Mod, backlit TRD emblem on bumper, Morimoto D2S projectors,
    Have you checked the diff fluid?? Might be dirty, or there could be metal shavings
     
  8. Apr 12, 2012 at 8:24 PM
    #8
    Kelson

    Kelson Well-Known Member

    Joined:
    May 13, 2008
    Member:
    #6597
    Messages:
    4,433
    Gender:
    Male
    First Name:
    Kelson
    Honolulu, Hawaii
    Vehicle:
    08 5-Lug Reg. Cab SR5
    SR5 Exterior/Interior (Color matched Front Bumper, Chrome Grille Surround and Chrome Rear Bumper/Silver Scoshe Dash Kit, A/C Bezel, A/C Vent Surround) LED license plate and white interior lights, Wet Okole Seat Covers, iPad in-Dash, JL CL-RLC, JL 13TW5 sub, JL 500/1 Slash V1 amp, JL XR 6.5 Components, Rockford Fosgate 6X9s in Boxes Front XRunner Coils, DJM Control Arms and Rear 4X4 Leafs, Custom 2" Angled Streetacos.com Blocks Front XR Bilstien Struts and Rear XR Bilstien Shocks, CravenSpeen Antennae, RX-8 Rims w/ Fronts:235/40-R18 Sumitomo HTR Rears:245/40-R18 Goodyear Eagle GT, 35% Tint front windows, OEM Sliding Privacy Glass w/ 5% Ceramic Tint, Flowmaster Super 44 dumped before the axle, URD Short Throw Shifter, Door Sill Protectors, Door Edge Guards, OEM Sport Pedals,The Retrofit Source Morimoto Mini D2S Stage III 35W 5K HID Headlights, OEM Fog Lights w/ piss yellow bulbs, OEM Cruise Control, Porsche 944 Bucket Seats, BeefedTaco Skid Plate, Whale
    if you touch hot things, you'll burn your hand.

    bumbai you learn.
     
  9. Apr 12, 2012 at 8:27 PM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    112,751,503
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2019 Rubicon 4 Door,
    4.10 gears, sliders, and lots of buttons.
    Youre also running an LS Diff, so it can get hotter than an open diff. As long as it stays below 200*, youre fine.
     
  10. Apr 12, 2012 at 9:11 PM
    #10
    badger

    badger Well-Known Member

    Joined:
    Jan 6, 2012
    Member:
    #70102
    Messages:
    2,128
    Gender:
    Male
    Vehicle:
    07 SR5
    The diff in the 4.0 Tacoma is too small for the application. It's only an 8" ring, and there is too much HP for that small of a gear. The result is high temps. On the freeway they will run 170 to 190 depending on the ambient temp. A normal freeway diff temp for a properly sized ring is around 150. If you pull a trailer, especially up grades, you can hit temps of 220 or higher. Most gear oils can take temps up to 220 without significant damage. At around 240 most synthetics start giving up. A very few, like Redline can take temps much higher, but anything over 220 is the red zone because seals don't like excessive heat either.
    If you tow, or do alot of high speed driving, or climb alot of grades, you should use a top grade synthetic and change it every year. I run Redline 75-140.

    Also, if you use a infrared thermometer to check the diff temp, you need to stop quickly and read the temp immediately. The temp will drop very quickly once the load is relieved.
     
  11. Apr 12, 2012 at 9:12 PM
    #11
    Tacon

    Tacon Member

    Joined:
    Apr 11, 2012
    Member:
    #76758
    Messages:
    24
    Gender:
    Male
    I've messed w/ Dana and Ford differentials.
    Here's some temps I got.
    70 mph cruise (fresh build w/ new bearings) runs up to about 165F.
    70 mph cruise (fresh build w/ old bearings) runs about 135F.
    70mph cruise on broken in diff runs about 125F to 135F.
    I agree w/ chris; If you are pushing 200F it's time to sweat.
    I agree w/ hedles; check fluid for significant metal shavings, nasty opacity and burnt smell.
     
  12. Apr 12, 2012 at 10:04 PM
    #12
    pwo

    pwo [OP] Active Member

    Joined:
    Feb 21, 2012
    Member:
    #73341
    Messages:
    29
    Gender:
    Male
    First Name:
    Philip
    Northeast Arkansas
    Vehicle:
    RED!!! 07 4x4, trd sport
    JP Metal Fab Tie downs, Tacoma4x4 LED 4x4 switch, Weathertech mats, Ultra-gauge, Sony in dash DVD, LED cup-holders and cubbies.
    Thanks for the info. It did have some nasty stuff in there when I changed it. The oil was pretty much black, and the magnetic drain plug had some thick greasy sludge covering it. Also some larger than normal shavings (2-3) but really thin I thought that the shavings might have been what was left of the old seal spring. As the rubber on the seal I took out was almost gone with no spring. Hope it's not wrecked, it looked like the oil has never been changed. Bad thing is I got dealer service records documenting service on this truck since it was new, thought it would be good to go...
     
  13. Apr 12, 2012 at 10:23 PM
    #13
    pwo

    pwo [OP] Active Member

    Joined:
    Feb 21, 2012
    Member:
    #73341
    Messages:
    29
    Gender:
    Male
    First Name:
    Philip
    Northeast Arkansas
    Vehicle:
    RED!!! 07 4x4, trd sport
    JP Metal Fab Tie downs, Tacoma4x4 LED 4x4 switch, Weathertech mats, Ultra-gauge, Sony in dash DVD, LED cup-holders and cubbies.
    Used Lucas 75-90, it says no additives needed that it is perfect for LSD.
    This stuff:
    61e8eb8f-b78a-d2dd_dda2343a94fea32ae9f0390c16f629ad54f31485.jpg

    61e8eb8f-b7c6-ec9b_bdcc5eba92adc5bade65aca18d4e0aed750e6d08.jpg

    First time using their products in a 4wheeler, been using their stuff in my bikes for awhile now.
     
  14. Apr 12, 2012 at 10:38 PM
    #14
    landphil

    landphil Fish are FOOD, not friends!

    Joined:
    Mar 3, 2011
    Member:
    #52290
    Messages:
    3,175
    Gender:
    Male
    BC, Canada
    Vehicle:
    RIP 2006 Tacoma DCSB
    Tundra 5.7 mod
    Lucas products usually raise operating temps in diffs or trannies significantly, despite what the propaganda on the bottle says. I speak from personal experience on this, and will never recommend lucas. I'd drain it and put real lubricant in, with LSD additive.
     
    DaveInDenver likes this.
  15. Apr 12, 2012 at 11:56 PM
    #15
    Tacon

    Tacon Member

    Joined:
    Apr 11, 2012
    Member:
    #76758
    Messages:
    24
    Gender:
    Male
    If 2-3 larger shavings were found you can be sure more are there.
    How big are the shavings?
    Significant shavings can wreck the bearings then wreck the entire differential.
    I would disassemble entire differential then clean and inspect.

    If the differential is currently whine-free there is a good chance it will live following a good cleaning. There is also a chance the bearings can chew up the shavings and survive w/o cleaning.

    Million dollar question is if the shavings are significant enough to trash the differential.

    As a minimum I would flood the differential with kerosene. Gently drive on level driveway a few yards. Drain kerosene. Add cheap gear oil. Drive a few easy miles. Drain. Add final gear oil mix. Monitor temp and noise now and then.
     
  16. Apr 13, 2012 at 6:39 AM
    #16
    pwo

    pwo [OP] Active Member

    Joined:
    Feb 21, 2012
    Member:
    #73341
    Messages:
    29
    Gender:
    Male
    First Name:
    Philip
    Northeast Arkansas
    Vehicle:
    RED!!! 07 4x4, trd sport
    JP Metal Fab Tie downs, Tacoma4x4 LED 4x4 switch, Weathertech mats, Ultra-gauge, Sony in dash DVD, LED cup-holders and cubbies.
    Yeah, I will definitely do a flush and drain then, it sucks dumping $50 worth of oil though. Oh well I got to make it right. Think I will just put regular old diff oil w/ additive in there next.
     
  17. Apr 13, 2012 at 6:51 AM
    #17
    ecoterragaia

    ecoterragaia Everyone lives downstream.

    Joined:
    Jan 23, 2011
    Member:
    #49786
    Messages:
    1,840
    Gender:
    Male
    Central Virginia
    Vehicle:
    2006 RC 4X4 5 speed & 2021 4Runner SR5
    I changed my diff lube when i bought the truck at 18000 miles, it was black and sludgy with a couple of shavings too. There was even a hunk of metal leftover from the milling process. Changed it again a year later and the fluid looked exactly like it did when i put it in the first time.
     
  18. Apr 13, 2012 at 7:02 AM
    #18
    pwo

    pwo [OP] Active Member

    Joined:
    Feb 21, 2012
    Member:
    #73341
    Messages:
    29
    Gender:
    Male
    First Name:
    Philip
    Northeast Arkansas
    Vehicle:
    RED!!! 07 4x4, trd sport
    JP Metal Fab Tie downs, Tacoma4x4 LED 4x4 switch, Weathertech mats, Ultra-gauge, Sony in dash DVD, LED cup-holders and cubbies.
    The differential has zero noise coming from it at this time. If it does go, a locker is coming sooner than later!!!!!!! Woo-Hoo!!!!!
     
  19. Apr 13, 2012 at 7:21 AM
    #19
    landphil

    landphil Fish are FOOD, not friends!

    Joined:
    Mar 3, 2011
    Member:
    #52290
    Messages:
    3,175
    Gender:
    Male
    BC, Canada
    Vehicle:
    RIP 2006 Tacoma DCSB
    Tundra 5.7 mod
    I'm a commercial truck tech with my specialty being gears, so I know my "stuff".
    Who do you mean by ESGS? :confused:Google came up with "European Squad of Gifted Soldiers" and "European Salivary Gland Society". I wouldn't take either's opinion on this matter.:rolleyes:
     
  20. Apr 13, 2012 at 7:48 AM
    #20
    badger

    badger Well-Known Member

    Joined:
    Jan 6, 2012
    Member:
    #70102
    Messages:
    2,128
    Gender:
    Male
    Vehicle:
    07 SR5
    Lucas is not my first pick either for transmission or diffferential. I run a temperature probe in my rear differential so I'm not guessing either. Keeping the heat build under control during towing has been a major concern of mine with this truck.
     

Products Discussed in

To Top