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ECT Mod -- ON ALL the time

Discussion in '3rd Gen. Tacomas (2016-2023)' started by MESO, Oct 18, 2016.

Page 2 of 27
  1. Oct 18, 2016 at 5:17 PM
    #21
    Scooby24

    #21
    Scooby24 Well-Known Member

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    My fuel economy is better since I'm not having to constantly throttle correct to downshift into an appropriate gear.
     
    Scooby24, Oct 18, 2016
    #21
    TacoJonn, SamChieftan, CO TacoBoy and 2 others like this.
  2. Oct 18, 2016 at 5:17 PM
    #22
    BartMaster1234

    #22
    BartMaster1234 American Auto Horns

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    No way, that's impressive. Once I turn on the ECT on my '98, the fuel economy goes to shit. I only use it when I'm entering the freeway or accelerating.
     
    BartMaster1234, Oct 18, 2016
    #22
  3. Oct 18, 2016 at 5:19 PM
    #23
    big_jarv

    #23
    big_jarv Well-Known Member

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    Awesome mod!
     
    big_jarv, Oct 18, 2016
    #23
  4. Oct 18, 2016 at 6:21 PM
    #24
    MESO

    #24
    MESO [OP] Major Modder Vendor

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    Okay UPDATE*****
    Weirdest thing,
    Started/drove fine after I ran a few errands. On the ~3rd start cycle I put it in gear and got a check engine/trac control light on.:frusty:
    Truck still drives normal.. so I unhooked battery and did a quick reset, All clear.

    I have unhooked it from the purple "start signal" wire until I can re-evaluate it.
    Not sure if ECT is turning on too soon before the truck fully starts, or if there is some data in that start wire(shouldn't)
    I am going to try to activate it a different way.maybe tag off nuetral light so every time I put it in gear ECT turns on.
    Back to the drawing board... SOO close!
     
    MESO, Oct 18, 2016
    #24
    SLeeper512 and WileECoyote like this.
  5. Oct 18, 2016 at 6:36 PM
    #25
    WileECoyote

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    WileECoyote Well-Known Member

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    Either way, very sweeeeeeeeeeeet mod!!! :thumbsup::fistbump::cheers:
     
    WileECoyote, Oct 18, 2016
    #25
  6. Oct 18, 2016 at 6:39 PM
    #26
    Pistol Pete

    #26
    Pistol Pete Go Pokes!

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    Eric
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    That sucks! Good luck finding a solution.

    You might update the OP too
     
    Pistol Pete, Oct 18, 2016
    #26
    su.b.rat likes this.
  7. Oct 18, 2016 at 6:42 PM
    #27
    MESO

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    MESO [OP] Major Modder Vendor

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    I am pretty sure the ECT is coming on too soon to give the truck a chance to "boot up".
    Next, I'll try and tap off the N or R light to activate it once I put in gear. Fingers crossed
     
    MESO, Oct 18, 2016
    #27
  8. Oct 18, 2016 at 7:22 PM
    #28
    hksjza70

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    hksjza70 Well-Known Member

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    Want this
     
    hksjza70, Oct 18, 2016
    #28
  9. Oct 18, 2016 at 7:31 PM
    #29
    BarberRider

    #29
    BarberRider Merit Badges: Scuba Cliff diving Mirror Awareness

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    It's got a cop motor, a 440-cubic-inch plant. It's got cop tires, cop suspension, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
    hell yeah. subd
     
    BarberRider, Oct 18, 2016
    #29
  10. Oct 18, 2016 at 7:35 PM
    #30
    Mosquisite

    #30
    Mosquisite Verified Lurker

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    have you considered something like this?

    http://www.wolstentech.com/products/timedelayrelay/tdr-m.php

    I have seen this product used in the FRS/BRZ/GT86 community for automatically disabling traction control at startup. As far as I know all people who tried this were successful and no codes were thrown as this it simulates the button press and both the delay before activation and the length of the "press" is adjustable
     
    Mosquisite, Oct 18, 2016
    #30
  11. Oct 18, 2016 at 8:07 PM
    #31
    axisofoil

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    axisofoil Rocket Surgeon

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    A timer activated button press isn't tough to wire up.

    Assuming that at least some sort of power and ground is present at the switch, and at least one wire going to the switch changes voltages on power up, it's completely plausible to do this in a male-female plug-n-play setup.
     
    axisofoil, Oct 18, 2016
    #31
  12. Oct 18, 2016 at 8:28 PM
    #32
    Taco16LB

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    Taco16LB Well-Known Member

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    You may end up with turning it on and off each time you go thru N or P if you go there .
     
    Taco16LB, Oct 18, 2016
    #32
  13. Oct 18, 2016 at 9:01 PM
    #33
    0210

    #33
    0210 Well-Known Member

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    I would imagine a time-delayed relay would solve the problem - that's what I had in mind for doing this same mod. Something like this:
    $35 Small Miniature Timer on Off Cycling delay Relay 0.1 sec to 9999 Hours. 3V 12V 18V DC 5A. Power On Off delay, Cycling. Industrial Control and Hobby. and Programmer
    https://www.amazon.com/Miniature-cy...d=1476849615&sr=8-2&keywords=time+delay+relay . Set it to 10 seconds and all should be good.

    // edit - @Mosquisite beat me to it.
     
    0210, Oct 18, 2016
    #33
  14. Oct 18, 2016 at 9:48 PM
    #34
    splitbolt

    #34
    splitbolt Voodoo Witch Doctor

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    Pretty sure you want terminals 1(White/Black) and 4(Pink) on a time delay.

    etc1_zps87ltuley_9f2189fc99fb844dd182b07f3e781f3f769f9769.jpg

    etc2_zpsmorhpxwd_6f666e82144e4d518a62cb9e8f761d7da77aba3e.jpg

    etc3_zpsrik2nbzb_8a5dd1392277aa81c51ffa5eb45bcc735421e53d.jpg
     
    splitbolt, Oct 18, 2016
    #34
    vinkon235 likes this.
  15. Oct 19, 2016 at 1:08 AM
    #35
    MOC221_

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    MOC221_ 3 pedal metal

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    Nice work! Did you install a diode (reverse biased) across the relay coil? If not, you'll be introducing a rather large and potentially damaging voltage spike (flyback) on the start signal pin every time the relay de-energizes. We've already seen how sensitive these trucks are to electrical changes from stock.
    Just a word of caution, not trying to piss in your cornflakes!

    Here's a link if anyone is interested..

    http://davidbridgen.com/coil diode.htm

    Frank
     
    Last edited: Oct 19, 2016
    MOC221_, Oct 19, 2016
    #35
    Dammit Evie likes this.
  16. Oct 19, 2016 at 3:21 AM
    #36
    vinkon235

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    vinkon235 Well-Known Member

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    Good first try.Hope you figure it out.
     
    vinkon235, Oct 19, 2016
    #36
  17. Oct 19, 2016 at 4:36 AM
    #37
    splitbolt

    #37
    splitbolt Voodoo Witch Doctor

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    What's weird is, the oem switch has ground on one side and 12V on the other.
    Maybe the switch has a relay or latch/unlatch function.:notsure:
    I wish I could find what terminals 2 & 3 are supposed to be. It's not in the transmission or lighting section of the service manual.
     
    splitbolt, Oct 19, 2016
    #37
  18. Oct 19, 2016 at 4:43 AM
    #38
    MOC221_

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    MOC221_ 3 pedal metal

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    Judging by the diagram you posted, it looks as though the +12V is supplied through a pull up resistor. So when you apply the ground through the switch, it just pulls the line low (not much current draw). I was actually surprised that the OP was able to draw enough current to energize the relay through the circuit. I'm not sure how much that micro-relay coil draws, but the relays I use on a regular basis draw approx. 200-300mA.

    Frank
     
    MOC221_, Oct 19, 2016
    #38
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  19. Oct 19, 2016 at 4:54 AM
    #39
    splitbolt

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    splitbolt Voodoo Witch Doctor

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    So that's what that is?
    The foglight relay/switch is powered the same way. I haven't pursued the "anytime mod" further, cause I had no idea what was going with the 12V from the ECU.
     
    splitbolt, Oct 19, 2016
    #39
  20. Oct 19, 2016 at 5:17 AM
    #40
    BlkTaco47

    #40
    BlkTaco47 Unhinged

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    I use it all the time and don't notice much of a difference if any.
     
    Last edited: Oct 19, 2016
    BlkTaco47, Oct 19, 2016
    #40
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