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Rear Differential Temp sensor

Discussion in '3rd Gen. Tacomas (2016+)' started by You did what?, Oct 19, 2019.

  1. Oct 19, 2019 at 2:42 AM
    #1
    You did what?

    #1
    You did what? [OP] Well-Known Member

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    Has anyone installed a temp sensor on rear differential? If so, where did you install sensor. Toyota put a temp sensor on front diff, but not rear. ScanGauge II can read all relevant temps through obd port. I’m wanting one for rear differential.
     
    You did what?, Oct 19, 2019
    #1
    soggyBottom likes this.
  2. Oct 19, 2019 at 4:37 AM
    #2
    Chew

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    Chew Not so well known user

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    Gear oil change, is cheap and easy, just change more often.
    To answer your question: I can't see it realistically.
     
    Chew, Oct 19, 2019
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  3. Jul 6, 2020 at 3:22 AM
    #3
    soggyBottom

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    soggyBottom Well-Known Member

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    Perhaps you could add a sensor to the can bus. I haven't looked at it before but I would be very very surprised if there weren't unused address spaces. Checkout "Carduino". Here is a parts list. If you look around, you can find all the parts for around $20.
    $30 seeed studio CAN-Bus Shield V2 Compatible with Arduino
    https://www.amazon.com/dp/B076DSQFXH/ref=cm_sw_r_cp_apa_i_tQVaFbPTY7FXP
    $11 Fotag OBD2 16 pin to DB9 RS232 Serial Port Adapter Cable Diagnostic Extension Cable with Power Switch to Avoid Battery Drain 1.5M 5ft
    https://www.amazon.com/dp/B01ETRINYO/ref=cm_sw_r_cp_apa_i_MSVaFbPCZ1Y2J
    $23 ARDUINO UNO R3 [A000066]
    https://www.amazon.com/dp/B008GRTSV6/ref=cm_sw_r_cp_apa_i_5SVaFbTCAFRX2


    Maybe the front has the potential of getting hotter because slow hard driving in 4wd with less air flow. Also heat from the engine.

    Screenshot_20200706-061920.jpg
    Screenshot_20200706-061944.jpg
    Screenshot_20200706-062006.jpg
     
    soggyBottom, Jul 6, 2020
    #3
  4. Jul 6, 2020 at 4:24 AM
    #4
    2dogs_and_a_taco

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    2dogs_and_a_taco Well-Known Member

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    Have you had problems with the oil cooking?

    It’s not the cleanest solution, but I’ve had good luck with using non-contact thermometers for checking rear end temps in cars. Usually after installing new gears I keep an eye on the temp during break in.
     
    2dogs_and_a_taco, Jul 6, 2020
    #4
  5. Jul 6, 2020 at 5:51 AM
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    zoo truck

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    zoo truck Well-Known Member

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    My 2001 tundra rear differential held a lot less gear oil than these tacos. I just changed it every 30k miles. Never had an issue the entire 292k miles on the truck.
     
    zoo truck, Jul 6, 2020
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  6. Jul 6, 2020 at 6:03 AM
    #6
    hiPSI

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    hiPSI Laminar Flow

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    You guys know this is an old thread right? He never reported back so I assume it was never an issue.
     
    hiPSI, Jul 6, 2020
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  7. Jul 6, 2020 at 6:05 AM
    #7
    2dogs_and_a_taco

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    2dogs_and_a_taco Well-Known Member

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    Toyota recommends every 15k on these trucks for diff fluid change. That seems more often than necessary.. Almost like a way to get Tacoma owners in for service more often... (wearing my tinfoil hat)
     
    2dogs_and_a_taco, Jul 6, 2020
    #7
  8. Jul 6, 2020 at 6:08 PM
    #8
    soggyBottom

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    soggyBottom Well-Known Member

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    I found this thread because I was wondering about diff temperatures. No problems here, just curious.
     
    soggyBottom, Jul 6, 2020
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    hiPSI likes this.
  9. Jul 6, 2020 at 6:09 PM
    #9
    soggyBottom

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    soggyBottom Well-Known Member

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    I suspect that OP is just curious and likes seeing the numbers.
     
    soggyBottom, Jul 6, 2020
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  10. Jul 6, 2020 at 6:39 PM
    #10
    shakerhood

    #10
    shakerhood Well-Known Member

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    Are you sure it's that frequent, I could swear the book in the glovebox didn't recommend changing until 30K? I believe it does said to inspect the levels in there at some point too.
     
    shakerhood, Jul 6, 2020
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    Chew likes this.
  11. Jul 6, 2020 at 7:34 PM
    #11
    soggyBottom

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    soggyBottom Well-Known Member

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    I just hit 15k. Dealer had me wait for 3 hours while they rotated my tires. I think it is 30k
     
    soggyBottom, Jul 6, 2020
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    shakerhood likes this.
  12. Jul 7, 2020 at 5:13 AM
    #12
    2dogs_and_a_taco

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    2dogs_and_a_taco Well-Known Member

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    2dogs_and_a_taco, Jul 7, 2020
    #12
  13. Jul 7, 2020 at 5:29 AM
    #13
    2dogs_and_a_taco

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    2dogs_and_a_taco Well-Known Member

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    2dogs_and_a_taco, Jul 7, 2020
    #13

Products Discussed in

Fotag OBD2 16 pin to DB9 RS232 Serial Port Adapter Cable Diagnostic Extension Cable with Power Switch to Avoid Battery Drain 1.5M 5ft
$10.98
seeed studio CAN-Bus Shield V2 Compatible with Arduino
$29.90
ARDUINO UNO R3 [A000066]
$22.88
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