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Prius 2011 overheating. No codes.

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Marin Catalin, Jun 4, 2018.

  1. Marin Catalin

    Marin Catalin New Member

    Joined:
    Jun 1, 2018
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    Location:
    Romania
    Vehicle:
    2011 Prius
    Model:
    III
    Hi. I m new here. I have a 2011 Prius with 400.000 km. I have a strange problem. At high speed, high rpm or load, over 3000-4000rpm or 120-130 km/h, the engine temperature light is ON until I let la gas pedal. No codes stored. 130km/h, 4 people, highway, uphil, and the temperature light goes on. 110km/h, same conditions, light off. Any ideea ? I've changed the oil and coolant, same issue. Oil and coolant looks good, no changes in color.

    Posted via the PriusChat mobile app.
     
    #1 Marin Catalin, Jun 4, 2018
  2. Priuscali42

    Priuscali42 Junior Member

    Joined:
    Jan 8, 2019
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    Location:
    California
    Vehicle:
    2010 Prius
    Model:
    Four
    Same issue as im having. I have a head gasket leak but already did the diy seal. Then all worked out okay for 1 week after i went for an 8hr drive. I checked my headgasket for leaks but still remained intact. So i changed waterpump and still no avail, thermostat replaced with no success so my last resort is the radiator. Any other suggestions?
     
    #2 Priuscali42, Jan 8, 2019
  3. Raytheeagle

    Raytheeagle Senior Member

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    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    You clean the egr circuit stem to stern?

    That’d be my next step(y).
     
    #3 Raytheeagle, Jan 8, 2019
  4. Priuscali42

    Priuscali42 Junior Member

    Joined:
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    Location:
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    Vehicle:
    2010 Prius
    Model:
    Four
    Toyota replaced my egr valve. I already cleaned my egr stem and intake manifold. Also installed a catch can so i know i dont have any head leaks anymore. No codes. So now im leaning towards radiator. I also did my water pump twice because I thought the 1st waterpump could be a lemon
     
    #4 Priuscali42, Jan 9, 2019
  5. mjoo

    mjoo Senior Member

    Joined:
    Nov 9, 2016
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    1,311
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    Location:
    Michigan
    Vehicle:
    2010 Prius
    Model:
    III
    Have you cleaned out your EGR cooler? The EGR cooler is infamous for clogging. Any significant restriction along the entire EGR circuit will increase engine temps.

    Pixel XL ?
     
    #5 mjoo, Jan 10, 2019
    Raytheeagle likes this.
  6. Priuscali42

    Priuscali42 Junior Member

    Joined:
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    Location:
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    Vehicle:
    2010 Prius
    Model:
    Four
    I just recently cleaned it about 3 weeks ago.
     
    #6 Priuscali42, Jan 10, 2019
    Raytheeagle likes this.
  7. Juampa

    Juampa Junior Member

    Joined:
    Jun 19, 2018
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    Location:
    Florida
    Vehicle:
    2011 Prius
    Model:
    Four
    Hi I’m having the Same problem with my Prius , did yu Fix it , what was the Issue?
     
    #7 Juampa, Mar 2, 2021
  8. Minh

    Minh Junior Member

    Joined:
    Aug 22, 2018
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    Location:
    Sacramento
    Vehicle:
    2005 Prius
    Model:
    N/A
    I have similar issues with my Prius. I have a 2011. Changed out engine, water pump, sensor and thermostat. I have issue when I drive high speeds 70-80 mph up hill. Reservoir very hot almost to boiling temperature. Temp red light would turn on or flash and then when I slow down it will eventually turn off. My mechanic replaced literally everything minus the radiator and the inverter coolant pump. Can anyone please help????

    No codes or no check engine lights just the red light engine temperature turns on when driving high speeds up hill for long periods of time.

    Is the issue temp sensor on EGR pipes?

    My mechanic has replaced with all OEM parts. Any advice?

    Toyota service rep says might be inverter water pump, radiator clogged up, or water pump.
    Just had Toyota dealership diagnosed and they check for any leaks so it’s not the engine. They said water pump and thermostat. My mechanic replaced those 2 parts. I thought I was in the clear but I wasn’t. The car still overheats when driving high speeds 75-80 mph for long periods of time and red temperature light turns on again uphill at high speeds. Anyone please help and TIA

    replaced OEM water pump and thermostat twice.
    Please help
     
    #8 Minh, Mar 13, 2023
  9. black_jmyntrn

    black_jmyntrn Senior Member

    Joined:
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    Location:
    Los Angeles, CA
    Vehicle:
    2013 Prius Plug-in
    Model:
    Plug-in Advanced
    #9 black_jmyntrn, Mar 15, 2023
  10. Minh

    Minh Junior Member

    Joined:
    Aug 22, 2018
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    Location:
    Sacramento
    Vehicle:
    2005 Prius
    Model:
    N/A
    #10 Minh, Mar 15, 2023
  11. black_jmyntrn

    black_jmyntrn Senior Member

    Joined:
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    Location:
    Los Angeles, CA
    Vehicle:
    2013 Prius Plug-in
    Model:
    Plug-in Advanced
    as in.. bought from dealer OEM or amazon OEM?
     
    #11 black_jmyntrn, Mar 16, 2023
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