MY AC quit working a couple weeks ago and my car has been overheating

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Allison Meggison, Aug 1, 2020.

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  1. Allison Meggison

    Allison Meggison Junior Member

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    My car has been overheating for a long time and I've tried so many different things. I recently had a mechanic tell me the thermostat needed to be replaced so when he allegedly did that, the AC stopped working. Now my car overheats (the little red light will flash) and the AC doesn't work. Usually my car only overheats when I'm going up steep hills at higher speeds, otherwise it doesn't usually overheat. I looked at other feeds and didn't see anything similar regarding the situation.
     
    #1 Allison Meggison, Aug 1, 2020
  2. JC91006

    JC91006 Senior Member

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    What are the codes? You may already have a head gasket failure. It's pretty common for the Gen 3 cars to fail around 180+ thousand miles
     
    #2 JC91006, Aug 1, 2020
  3. bisco

    bisco cookie crumbler

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    is this a continuation of a previous thread?
     
    #3 bisco, Aug 1, 2020
  4. Allison Meggison

    Allison Meggison Junior Member

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    Kind of, i mean it’s the same car. Same
    History
     
    #4 Allison Meggison, Aug 1, 2020
  5. sam spade 2

    sam spade 2 Senior Member

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    Then you should have CONTINUED that thread so we don't have to go over all of the same stuff yet again.

    Simple answer: You NEED a different mechanic.
    He was guessing......and guessed wrong.......and messed something up in the process.
     
    #5 sam spade 2, Aug 1, 2020
  6. Grit

    Grit Senior Member

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    o_Oo_Oo_Oo_Oo_Oo_Oo_Oo_Oo_O
     
    #6 Grit, Aug 1, 2020
  7. Grit

    Grit Senior Member

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    She had a post with robot farts also.
     
    #7 Grit, Aug 1, 2020
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  8. Allison Meggison

    Allison Meggison Junior Member

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    I've been to at least 4 different mechanics since I've had this car. There are no codes right now. No this is not a continuation of the last thread. I would like to fix my AC
     
    #8 Allison Meggison, Aug 2, 2020
  9. lech auto air conditionin

    lech auto air conditionin Senior Member

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    What did the last four mechanic say about your AC issue ? Look over your life for repair work orders and summit up here in a post
     
    #9 lech auto air conditionin, Aug 2, 2020
  10. sam spade 2

    sam spade 2 Senior Member

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    BUT......is the car also still overheating ??
    If so, the two might be related and getting the AC working might just make the overheating WORSE.
     
    #10 sam spade 2, Aug 2, 2020
  11. pjksr02

    pjksr02 Active Member

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    Did we replace the engine's water pump in this car? The thermostat (it's part of the coolant inlet to the radiator) is easy to replace at the same time. You definitely don't want the engine cooking, regularly.

    Hopefully it's that simple. A clogged EGR system makes the engine run hotter too, but the overheat light is rare.

    Sounds like you need to get the a/c serviced by a specialized a/c shop.
     
    #11 pjksr02, Aug 2, 2020
    Last edited: Aug 2, 2020
  12. Higgins909

    Higgins909 Member

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    Have you taken it to a Toyota Service Department? 264k miles is a lot. (Not KM right?) What do you mean by the AC is not working? Does it just blow hot air? When the engine is off but car is on, can you hear the compressor (Low tone whine sound) and the fans? Can you see the fans spinning? (Careful with hair) Earlier this year when it was time to turn the AC back on I figured out my AC button wasn't on. Don't know why it was off but it was. Are both coolant tanks inbetween the min and max (Maybe it's low and full?) markers or pretty close? It could be that coolant wasn't cycled through after the thermostat was changed out and you're low.
     
    #12 Higgins909, Aug 4, 2020
  13. Shahzad Nayyar

    Shahzad Nayyar Junior Member

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    Are the cooling fans working? Might be that he disconnected the circuit

    Posted via the PriusChat mobile app.
     
    #13 Shahzad Nayyar, Aug 5, 2020
  14. Allison Meggison

    Allison Meggison Junior Member

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    I haven't had the AC looked at by anyone yet. I don't think the compressor is working because I don't hear it come on. When the AC is on it only blows hot air but I've only tried running it during the day when it's hot, not at night. The water pump and thermostat have been replaced. When I hooked up the freon tank, the gauge read that there was too much pressure in the line
     
    #14 Allison Meggison, Aug 9, 2020
    Last edited: Aug 9, 2020
  15. Allison Meggison

    Allison Meggison Junior Member

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    My engine was replaced last year with a used one but was still overheating after being installed.
     
    #15 Allison Meggison, Aug 9, 2020
  16. Allison Meggison

    Allison Meggison Junior Member

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    The only time I brought my car to a toyota dealership was when i had it diagnosed earlier this year and they didn't say anything about the engine or AC
     
    #16 Allison Meggison, Aug 9, 2020
  17. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Sounds like they never fixed what killed the 1st engine and it's well on its way to claiming a second.
     
    #17 Leadfoot J. McCoalroller, Aug 9, 2020
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