Throttle body coolant hoses - where do they go?!

Discussion in 'Gen 3 Prius Main Forum' started by Bobby Babaletskos, May 9, 2025 at 10:57 PM.

  1. Bobby Babaletskos

    Bobby Babaletskos Junior Member

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    Hello, I’m an idiot..
    I cannot find where the coolant hoses go to from the throttle body, I did the EGR cooler, intake manifold cleaning by taking them both out and I pulled some of the hoses. Now I don’t know where these hoses go.
    Can you help.
     

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  2. MAX2

    MAX2 Senior Member

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    The hoses go to two nipple outlets on the top and side.
    According to p.8 "Disconnect the throttle body connector and the 2 water by-pass hoses."

    https://attachments.priuschat.com/attachment-files/2024/10/258457_3rd_gen_-_Throttle_body_removal_and_install.pdf
     
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    For next time: throttle body can be lifted off, and intake manifold removed as well, without disconnecting the coolant hoses. There’s enough hose slack you can maneuver the throttle for cleaning, then just tie it to the inverter wiring harness and carry on. See top two links in my signature, second in particular, for coolant hose strategies during EGR cleaning. (On a phone turn it landscape to see signatures).
     
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  4. Tombukt2

    Tombukt2 Senior Member

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    You should be able to pick up the hoses in one hand and they're connected to their other end still in the car and just drop them over the throttle body and if you can't figure out which one goes where well you might not open the hood or are you saying you have removed these hoses from the other ends in there on the ground even then pick up the hose put it on its end where you know where it goes to the coolant coming to it or from it and again drop it over the throttle body while it's connected it's pr bent it's going to go right where it's been all its life. And good luck same thing with electrical plugs just hold them up above where you had them all unplugged and dropped the Assembly of plugs they'll all splay out to where they almost drop into their sockets
     
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