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Overheating, air trapped? How to bleed?

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by SKJSS, Jul 6, 2022.

  1. SKJSS

    SKJSS New Member

    Joined:
    Jul 6, 2022
    3
    0
    0
    Location:
    Dallas GA
    Vehicle:
    2014 Prius c
    Model:
    One
    Hey gang, hoping someone can help. I've got a 2014 Prius C. The car showed the overheating warning light and when I pulled over, the coolant level was very low. Added coolant and brought it to the shop. They pressure tested the cooling system and the block and found no issues. They found the cooling fan wasn't coming on, so that was changed and the system flushed. A short time later, overheat light came on. This time I noticed that the car was puking out the overflow. Back to the shop. New thermostat put in. Still getting the same thing. The car will only overheat if on the highway at 70mph+ or if working hard...like going up a hill. I suspect there is still air in the system. If I'm just sitting in a parking lot with the car on, when the ICE fires, I hear gurgling from the passenger front...likely the heater core. How do I get this air out of the system? Is burping the Prius C different than any other car?

    Could the water pump be starting to fail?

    Thanks for any help you can offer!
     
    #1 SKJSS, Jul 6, 2022
  2. BiomedO1

    BiomedO1 Senior Member

    Joined:
    Mar 27, 2021
    1,322
    722
    0
    Location:
    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    Welcome and sorry to hear this; Take it to another shop for a second opinion. That first shop sounds like a hack; and definitely didn't check their work when they were done!!!
    The car shouldn't overheat under load and someone botched a test or the shop/mechanic is simply guessing at what's wrong. If your coolant pump is intermittent; there should be codes in your ECU memory. Take it to a Prius specialty shop to get it properly diagnosed. With the proper diagnostic computer link; the mechanic can manually toggle each individual system on/off for a proper test.

    Hope this helps.
     
    #2 BiomedO1, Jul 6, 2022
  3. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,703
    38,242
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    How many miles?
     
    #3 Mendel Leisk, Jul 6, 2022
  4. SKJSS

    SKJSS New Member

    Joined:
    Jul 6, 2022
    3
    0
    0
    Location:
    Dallas GA
    Vehicle:
    2014 Prius c
    Model:
    One
    It currently has 316,000 miles. I didn't buy it new. I bought it at 291,000 last September. The original owner put all the miles on it and Carfax showed extensive service history (which I confirmed). So it was very well cared for, but does have a ton of miles on it.
     
    #4 SKJSS, Jul 6, 2022
  5. Sonic_TH

    Sonic_TH Active Member

    Joined:
    Mar 18, 2020
    525
    83
    7
    Location:
    Puerto Rico
    Vehicle:
    2012 Prius c
    Model:
    One

    Do you know if the engine water pump has been replaced?
     
    #5 Sonic_TH, Jul 7, 2022
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