Start stop no more after tune up

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by phigir, Jul 7, 2021.

  1. phigir

    phigir Junior Member

    Joined:
    Dec 28, 2010
    12
    3
    0
    Location:
    Palm Springs, CA
    Vehicle:
    2010 Prius
    Model:
    IV
    2010 Prius IV 79,000 miles first ICE tune up and now engine does not stop, even at idle after warm up. Display indicates engine off with pedal release during drive, but I feel the engine is still running. Any similar experiences? Any ideas? Also upon cold start up, ICE does not engage until in drive and accelerator applied.
     
  2. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,021
    7,697
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2010 Prius
    Model:
    V
    What was done during the tune up. What parts were replaced or "tuned up?"
     
  3. phigir

    phigir Junior Member

    Joined:
    Dec 28, 2010
    12
    3
    0
    Location:
    Palm Springs, CA
    Vehicle:
    2010 Prius
    Model:
    IV
    Thank you for your help. The invoice says spark plugs, fuel injector service with throttle body clean out and power 2.... whatever that means. Besides that an oil change with filter, front rotors replaced, plus front brakes pads, wheel alignment, tire rotation and balance.
     
  4. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    5,302
    3,737
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    tune up?!
     
  5. phigir

    phigir Junior Member

    Joined:
    Dec 28, 2010
    12
    3
    0
    Location:
    Palm Springs, CA
    Vehicle:
    2010 Prius
    Model:
    IV
    Grit, is that a question or a comment? I use “tune up” to refer to the ICE. The other stuff I listed is basic maintenance that I included to be well, thorough. If the term “tune up” is out of style, I apologize. I’m just a guy trying figure out why the car he’s been driving for the 11 years isn’t the same after maintenance. I’d appreciate any thoughts.
     
  6. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    45,559
    32,531
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    This was through a Toyota dealership? Have you called them? Maybe the unreadable item was a software update ??
     
  7. phigir

    phigir Junior Member

    Joined:
    Dec 28, 2010
    12
    3
    0
    Location:
    Palm Springs, CA
    Vehicle:
    2010 Prius
    Model:
    IV
    No, unfortunately it was my first maintenance outside of a dealership, a Meineke. And yes, I have called and before I allow them to take another look I wanted ideas from others.
     
    Mendel Leisk likes this.
  8. Valiant V

    Valiant V Member

    Joined:
    Apr 28, 2021
    239
    158
    0
    Location:
    Winnsboro, TX
    Vehicle:
    2017 Prius
    Model:
    Three
    Is it possible they put the hybrid system into a "maintenance" or "troubleshooting" mode that allows the engine to run when it normally wouldn't? This can be done to check for oil leaks and other stuff like that.

    I can't think of anything (else) during a "tune up" -plugs, maybe spark plug wires, air/fuel/breather filters, PCV valves, check/set specs - where possible- that kind of stuff) that would cause the engine to run when it wasn't previously.

    There's a crazy-complicated set of steps to put the system into maintenance mode, and maybe they didn't take it OUT of that mode. Manual also strongly warns to make sure to take it OUT of maint mode before driving.

    Having taken it to Meineke, there's no telling what the techs there know (and don't know) about Prius...
     
  9. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    5,752
    2,286
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    FIRST.......you need to raise the hood and be SURE that the engine is doing what you think it is doing.

    Then......I would NEVER let a place like Meineke touch my hybrid for anything more complicated than an oil change and air filter.
    But it's too late now.

    Now it's a tough call whether you let them look at it again.......or bite the bullet and take it to Toyota and fight with Meineke later about paying the bill for whatever they screwed up.

    I think you can not expect Meineke to cover any of the added expense unless you give them at least one chance to make it right.

    Sometimes the least expensive option for service ends up being much MORE expensive.

    I wish you luck.
     
  10. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    45,559
    32,531
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Taking it out of the mode is as easy as shutting the car off.

    Can't see how it would apply, but in B "gear" the engine continues to run?

    How's the hybrid battery state-of-charge?
     
    #10 Mendel Leisk, Jul 8, 2021
    Last edited: Jul 8, 2021
    ASRDogman and Valiant V like this.
  11. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    3,736
    2,231
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    If they shut the car off, it goes out of maintainance mode. So the next time you start it normally,
    it runs normally.
    Just because you "feel" the engine is running, doesn't mean it is. Forget your feelings....
    Do as Sam said: "you need to raise the hood and be SURE that the engine is doing what you think it is doing."

    Also, what "mode" do you have the car in? If it's in POWER mode, the engine may run more than you "feel" it should.
    I suggest you use the "ECHO" mode. Then try to go to a quiet less traveled road and excellerate to about 30mph, set the
    cruise and watch the mpg indicator. When it is full, the engine is usually off, depending on the state of charge for the battery.
    When it hits 2 bars, you'll "feel" and hear the engine kick in.
    You'll also "feel" and hear it kick off if/when the battery is charged enough. If you press and release the cruise lever down
    to 29,28,27, etc. mph and you'll see the guage go to 100mpg.
    Anything above about 40mph, the engine will be running unless you are going down hill or slowing down.

    Perhaps there is someone close to you that also has a Priuse that can ride with you and explain what is happening
    and help you "feel" and hear what the enigine is doing and when.

    I think that you are maybe not understanding why/when the engine is running.


     
    Grit likes this.
  12. Valiant V

    Valiant V Member

    Joined:
    Apr 28, 2021
    239
    158
    0
    Location:
    Winnsboro, TX
    Vehicle:
    2017 Prius
    Model:
    Three
    I think an oil change may be beyond their ability as well.

    "CarFax" is a wonderful thing. Revealed our one-owner Prius went to a "quick-lube" place, then the owner had to take it to Toyota for an oil leak. Apparently, the generic lube places aren't up to speed on oil filter housings with O-rings.
     
  13. Valiant V

    Valiant V Member

    Joined:
    Apr 28, 2021
    239
    158
    0
    Location:
    Winnsboro, TX
    Vehicle:
    2017 Prius
    Model:
    Three
    Didn't know it was that easy.

    From the warnings, I would have guessed not.
     
    Mendel Leisk likes this.
  14. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    5,302
    3,737
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    which warnings?
     
  15. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    45,559
    32,531
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    To not drive the car in maintenance mode? Are we adrift though?
     
  16. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,021
    7,697
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2010 Prius
    Model:
    V
    From the big laundry list you have here, it's going to be hard to narrow down what is causing the issue. From what I can see, it can be related to the spark plugs (not using the correct Denso or NGK part) or the fuel injector service. But Fuel injector service can be anything, as simple as putting a bottle of cleaner into your fuel tank.

    I would monitor your situation and continue driving the car until you use up that tank of fuel. Next tank of fuel, put in some Premium Unleaded gas and see if things improve. If it doesn't improve, then go back and address the problem with Mineke. Mineke is not known to be experts at hybrid service, in fact, they may know very little about them. That huge laundry list of service, did you spend over $2000?
     
    phigir likes this.
  17. Valiant V

    Valiant V Member

    Joined:
    Apr 28, 2021
    239
    158
    0
    Location:
    Winnsboro, TX
    Vehicle:
    2017 Prius
    Model:
    Three
    That easy to get it OUT of maintenance mode is what I meant.
     
    Mendel Leisk and Grit like this.
  18. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    14,662
    10,291
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    It's that easy: turn the car off.

    Are we adrift though?
     
  19. privilege

    privilege Active Member

    Joined:
    Mar 17, 2021
    501
    127
    0
    Location:
    Birmingham
    Vehicle:
    2011 Prius
    Model:
    Three
    sounds like a temperature tested issue.... did they screw with any thermostat stuff?
     
  20. phigir

    phigir Junior Member

    Joined:
    Dec 28, 2010
    12
    3
    0
    Location:
    Palm Springs, CA
    Vehicle:
    2010 Prius
    Model:
    IV
    Thank you all for your suggestions. This morning when I started the car it operated normally. It may have been a heat issue, since I live in Palm Springs, CA. I’ll see how the next few trips go. Otherwise all seems to operate normally once the car cooled down by this morning when I drove it for a few miles. ICE would immediately disengage upon release of accelerator. I did not have AC on though, so will have to check that during the next trip. The high yesterday was 110°. The car is usually in the garage 24/7 cool garage and yesterday it was sitting out in the heat for hours, so maybe that played a roll. Thanks again for all your input.
     
    Mendel Leisk likes this.
Loading...