Is this right?

Discussion in 'Gen 2 Prius Main Forum' started by xartis, Jul 19, 2008.

  1. xartis

    xartis New Member

    Joined:
    May 22, 2008
    13
    0
    0
    Location:
    Ohio
    Vehicle:
    2008 Prius
    I finally picked up my Black Pkg2 on thursday. Only an 8 week wait. I've noticed that no matter how light I press the gas pedal the ICE seems to kick in. It will shut off when coasting down a hill or to a stop but it seems during any and all acceleration it kicks on. Is this normal? The only reason I ask is because I know a guy that works at the dealership as the lead painter for there body shop. He said that they had the toyota techs driving the car around the lot like there was something wrong with the car or the hybrid components. That got me a litte worried/curious if there is a problem. Right now I've put a little over a hundred miles on the car and am averaging about 41mpg. Just wondered what you thoughts were.
    BTW...I love this car. Thanks
     
  2. Rokeby

    Rokeby Member

    Joined:
    Jan 21, 2008
    3,033
    705
    75
    Location:
    Ballamer, Merlin
    Vehicle:
    2008 Prius
    xartis,

    having the ICE running continuously, or nearly so, is or is not normal depending
    on where it is in the ICE/catalytic converter warm-up progression. Take a
    look at this thread, and see how your observations fit with the five stages.
    Note also that to get the full range of ICE-off options, you need to get up to
    35 MPH at some point.

    http://techno-fandom.org/~hobbit/cars/five-stages.txt

    Unfortunately, you need a ScanGauge to know for sure when you pass over
    the temperature thresholds. But a SG is not absolutely essential to get good
    MPGs. At only 100 miles driven, there is a lot of reading and practicing still
    to do.
     
  3. footprintx

    footprintx New Member

    Joined:
    May 3, 2008
    38
    1
    0
    Location:
    Riverside, CA
    Vehicle:
    2004 Prius
    That sounds normal to me, that's how mine operates (or how I'd have perceived it to operate). You should be able, at super-slow-acceleration at slow speeds, be able to use battery-only, but it could hardly be called acceleration it's so minute.
     
  4. MJ Daniels

    MJ Daniels Member

    Joined:
    Dec 23, 2007
    15
    0
    0
    Location:
    Hartford, CT
    Vehicle:
    2008 Prius
    You just got the car right? I would say to give yourself and the car some time ~ 5000 miles to get broken in and for you to get to get accustomed to how it all works. And read this board. There is a wealth of info here.
     
  5. sandman

    sandman Member

    Joined:
    Mar 3, 2008
    277
    30
    0
    Location:
    kentucky
    Vehicle:
    2008 Prius
    I do know if you have the AC on that the ice kicks in alot more ...
     
  6. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,060
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    That is what I was going to ask. The A/C one can cause the ICE to run more than normal.

    Check your tire pressure as well. An increase in rolling resistance due to low tire pressure will cause the ICE to come on in response to a need for more power to move the car.
     
  7. xartis

    xartis New Member

    Joined:
    May 22, 2008
    13
    0
    0
    Location:
    Ohio
    Vehicle:
    2008 Prius
    I have had the A/C on a lot. It's been 95+ degrees around here the last week or so. I figured the car would loosen up after its broke in. Thanks for you replies.
     
  8. kcpistol

    kcpistol Byte Stylist

    Joined:
    Apr 19, 2008
    51
    0
    0
    Location:
    Independence, MO
    Vehicle:
    2019 Prius
    Model:
    Four
    Good advice I have taken on the A/C is to set it at about 77-80 - it will be on enough to cool things off and won't stay on all the time. Also in the summer window tinting helps a lot. Have fun with your new baby!
     
  9. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,060
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Sounds pretty normal then. Keep the A/C on and stay cool and don't sweat the minor fuel milage difference. Better to remain healthy and in a good state of mind than overheat and make a mistake while driving. :)

    I keep mine at about 78deg and that is enough to keep me feeling fine even in 100+ deg temps.
     
  10. donee

    donee New Member

    Joined:
    Aug 15, 2005
    2,956
    194
    0
    Location:
    Chicagoland
    Vehicle:
    2010 Prius
    Model:
    III
    Hi Xartis,

    The Prius has a special AC unit. Its not on and off like other cars. It can put out variable levels of cooling. This saves a bunch of gas.

    Check out how to set the AC for like 80 F in automatic mode. Do not just set it for MAX AC and forget about it. The AC unit also has a humidity sensor and will dry out the air by running at lower levels more continuously. So 80 F feels cooler than one would think. When you first start the car, it will run a bunch, then slowly taper off as the car cools. If you can keep the car shaded, and with the windows cracked, that will help your fuel economy a bunch. Because besides you, the car needs to keep the battery cool. If you hot-soak the car, it will run the AC extra to cool that battery down. I use the sun shade for the front window sold on Prius Chat here. It covers the whole window, and I park the car into the afternoon sun. That way the passenger compartment is as cool as can be.

    Another thing to do is set the tires at 42 PSI front, and 40 rear. The door placard pressures are too low for good tire life (edges wear out much quicker at these presures), and probably wrong for hydro-planing resistance as well.
     
  11. davidtm

    davidtm Member

    Joined:
    Oct 28, 2007
    179
    54
    0
    Location:
    TJ'ville
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    I've also noticed that, even when accelerating as slowly as possible from a stop at a light, that the ICE will kick in at about 15 mph despite how careful I am, unless the hybrid battery charge is in the green bars range, or if I'm on a downward slope.

    Also remember that your mileage will improve over the first 1000 mi or so.

    Enjoy!
     
  12. Rokeby

    Rokeby Member

    Joined:
    Jan 21, 2008
    3,033
    705
    75
    Location:
    Ballamer, Merlin
    Vehicle:
    2008 Prius
    davidtm, et al,

    I'm going to offer an observation here, but I don't recommend it for frequent
    use. From practical experience, I'm in with the crowd who advocates
    minimizing the times that you intentionally use only yellow arrow, solely HV
    battery power. It needs to be said that I do not -- yet -- have an EV switch.

    Ok, that said, in my daily commute there are a time or two when just a few
    seconds of EV drive -- I prefer "golf cart mode" -- will get me to a
    place/speed that will then result in a long no arrows glide or other
    advantageous state/place without the ICE coming on.

    And here at last is the observation: an initial golf cart mode run up to say
    12-15 MPH can be extended by backing off the go pedal to "no arrows" if
    you can find it, or more easily all the way to blue arrow regen, and then
    right back to yellow arrows. This allows me to pick up speed to say 20 MPH,
    or double the distance covered before the ICE kicks in. I often use this at the
    end of my AM commute to roll up to my accustomed spot in the parking garage.
    (Here I use the really fanatical trick of parking head out, so I can get moving
    ASAP when the car is in S1 warm-up in the evening.)

    Not an earth shaking discovery by any means, but just another trick to have
    in your bag of high-MPG tricks. Hope this helps.
     
Loading...