1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Mystery coolant line

Discussion in 'Gen 3 Prius Technical Discussion' started by metrogtiguy, Oct 25, 2021.

  1. metrogtiguy

    metrogtiguy Junior Member

    Joined:
    Oct 25, 2021
    21
    5
    0
    Location:
    Bradenton, FL
    Vehicle:
    2014 Prius
    Model:
    Two
    Hey everyone, first Prius I've owned! I'm working on restoring it, since it was destined for a junkyard soon.

    2014 Prius Two
    105k miles
    Had a new engine installed, but it was never ran

    I began filling the coolant, and I noticed some leaking. It looks like there's only one cooling line attached to what looks like the thermostat housing. Any idea where this open line would go?? I couldn't find any diagrams that were relevant. This is on the passenger side of the car, right above the AC compressor. Thanks for the help!!
    cooling2.jpg Inkedcooling1.jpg
     
    #1 metrogtiguy, Oct 25, 2021
  2. metrogtiguy

    metrogtiguy Junior Member

    Joined:
    Oct 25, 2021
    21
    5
    0
    Location:
    Bradenton, FL
    Vehicle:
    2014 Prius
    Model:
    Two
    Found it! Looks like it's for the EGR coolant return. Part # 1626737050
     
    #2 metrogtiguy, Oct 26, 2021
  3. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,793
    48,994
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    can you back the picture out so i can look under my hood and try to find it?
     
    #3 bisco, Oct 26, 2021
  4. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    23,321
    15,108
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    The hose you want is 16267. That's the bypass return hose; it brings coolant back to the water pump even when the thermostat hasn't opened yet. You can see that the coolant returning is coming from the leg pointing down from the front of the EGR cooler (which gets there after circulating through the heater and the exhaust heat recycler) and is joined by the coolant returning from the throttle body. A fairly significant hose, all in all.

    [​IMG]
     
    #4 ChapmanF, Oct 26, 2021
    Mendel Leisk and Ed Beaty like this.
  5. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,721
    38,252
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    #5 Mendel Leisk, Oct 26, 2021
(You must log in or sign up to post here.)