Two thousand eleven prius, I think the fuel pump maybe going need some advice

Discussion in 'Gen 3 Prius Technical Discussion' started by bobby515, Jun 23, 2025 at 3:34 PM.

  1. bobby515

    bobby515 Member

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    i've been driving a 2011 Prius, 232k steadily 2 full years.
    Today I worked this morning.
    I do Uber with the car . While back I put a new head gasket water pump, I maintain the car Nice clean the e g r.
    This afternoon, when I got in the car
    , it started right up. But it kinda bogs a little bit and hesitates, no poppin', quick or backfiring, no engine codes,
    I ran the code reader, but it seems lack of power.
    I cannot get on the highway from my house. But it's drivable in the neighborhood With a full charged battery,
    it didn't seem much different. Well, it's almost like there's a miss in it. In the maintenance mode, it also seem to run the same.
    Any advice on what to check or look for I got a 1/2 a tank of fuel. I filled it two days ago
    It's a 100° out I had a similar problem years ago. I thought maybe vapor locked, and I opened up the gas cap and shook the car up-and-down and went away. I tried that no, go.
    I don't hear any noise.
    coming from the fuel pump, it's super hot. Is there any advice on how it check to pump? Were any ideas what could be wrong? I'm very handily .
    Thanks for any help.
    Also too, the last few days. If I take off real fast with the car, when it's running good and even today, it seemed like the motor overreaves, when you let off the gas the rpms, you could hear it like it's like a special noise other than that. It's got a good idol.I just can't figure it out.
     
    #1 bobby515, Jun 23, 2025 at 3:34 PM
  2. Tombukt2

    Tombukt2 Senior Member

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    If someone steps on the gas while it's ready the engine fires up if you have the gas tank door open and cap off listen in tank should be buzz
     
    #2 Tombukt2, Jun 23, 2025 at 3:51 PM
  3. bobby515

    bobby515 Member

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    So the car starts normal.open fuel door get someone to start it
    Listen for a buzz. If it buzzes. Is that good or bad.? Tks
     
    #3 bobby515, Jun 23, 2025 at 4:38 PM
  4. Tombukt2

    Tombukt2 Senior Member

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    It would indicate that the pump is running that it's making required volume and pressure is another type test and a pita before I did that test I could replace the cheap pump twice.so at any kind of mileage I'd just change it it's quick painless. And at mileage . Wait till you see it come out it should be dirty notice sock filter.
     
    #4 Tombukt2, Jun 23, 2025 at 5:44 PM
  5. bobby515

    bobby515 Member

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    So you think I should just change the pump?? Is it safe to buy aftermarket pumps?? Thanks..
     
    #5 bobby515, Jun 23, 2025 at 8:50 PM
  6. Tombukt2

    Tombukt2 Senior Member

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    Yes the size in you're Prius is like Corolla and others can be had by major mfgrs for 56 bucks and up . I typically use about a 66 dollar model I put a 38 dollar unit in my 02 Corolla been in 8 yrs now . Still great . If 8 had 100 K.plus 8moght just swap it . Technically it should go to 200 plus but quality has come way down after 2010. All across the board.
     
    #6 Tombukt2, Jun 23, 2025 at 10:03 PM
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  7. ASRDogman

    ASRDogman Senior Member

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    Do not just change any part without properly checking to see if it's bad.
    Unless you have money and time to throw away.

    You should do fuel flow tests and pressure tests.

    Be careful what some people tell you on here. They don't always have YOUR best interest in mind.

     
    #7 ASRDogman, Jun 23, 2025 at 10:31 PM
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  8. bobby515

    bobby515 Member

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    I agree. It's a panic because of work. I will do a presure test. The more I think about it. I think maybe its the convertor when it got really hot
    It's 12am here still 90. In the am. I will drive it around the area. I been having a foul odor on heavy acceleration on hwy for a very long time.
    Thanks for your patience. It's even hot in my home with window air-conditioned.
     
    #8 bobby515, Jun 24, 2025 at 12:24 AM
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