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Thread: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1989

  1. #221
    Van Addict Carbonized's Avatar
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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    someday I will learn to read a wiring diagram - in the meantime I keep trying to back my way into the rogue wires.

    Any ideas on where this one goes?

    Seems like it would connect near the radiator cap somewhere. Got a sketchy wire there already but no room for a 3rd connection that I can see.

    BONUS CLUE - my radiator light is always on.
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  3. #223
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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    There’s a thread that outlines all the ports around the filler neck but I’m not able to locate it at this time, as for your radiator light “staying on” your low on coolant, loosing coolant somewhere or your overflow bottle sensor has gone out??

    Here’s a thread on “radiator overflow bottle sensor”

    https://www.toyotavantech.com/forum/...ht=Filler+neck

    Hope this helps, this may not be the problem but it’s an excellent read

    JDM
    Last edited by JDM VANMAN; 05-07-2019 at 06:02 PM.

  4. #224
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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    on it - not leaking any coolant but thanks for the link JDM, I love going deep on these issues regardless.

  5. #225
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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    sketchy wire is to brown thermal time switch, cold start injector...youre in maine? fix it(btw that sensor is expensive)....fix the other green wiring too as thats the sensor for ecu to read coolant temp and adjust fuel....the lost wire should be grounded, it was for a hot soak fuel pressure bump up for 2 mins? but its better to just ground it so it bumps up every start.

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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    thank you!

  7. #227
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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    I'm assuming this one is California's fault, but I couldn't find it in this thread or any others google gave me:

    Name:  IMG_0283.jpg
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    to help triangulate - that's between the airbox, battery, and exhaust, runs up and taped to the O2 sensor wire.

  8. #228
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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    That's your Throttle Position Sensor harness connection. On the back side of the throttle body there's a black plastic box. The connector in your picture should be plugged into that.

    Here's a thread that features the throttle body and the TPS:

    https://www.toyotavantech.com/forum/...-Throttle-Body

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    Re: The WHAT-IS-THIS-PART and WHAT'S-THE-PART-NUMBER Thread for US Toyota Vans 1984-1

    Thanks Tim, I never would have caught that the way it was taped so far down to the sensor wires. I’m wondering if that was responsible for the way she’s always bogging down after puddles.

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