1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Engine performance on top speed

Discussion in 'Gen 3 Prius Main Forum' started by Imrand, Mar 9, 2020.

Tags:
  1. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    Hello everyone i need assistance i own gen 3 2011 for past 16 months it was ok till a month ago. I was on highway and speed was 180km/h its top speed as i have JDM version. Suddenly i had to reduce speed and I felt power loss after that day till now I can’t cross 165km/h what ever i do. Ni error code performance is excellent till 140 after that its very hard for engine to push. there is an other problem some times I notice my engine gets very hard as i have to too push gas and some time its very light. Suggestion please what should i do ?
     
    #1 Imrand, Mar 9, 2020
  2. StarCaller

    StarCaller Senior Member

    Joined:
    Feb 15, 2014
    1,256
    706
    0
    Location:
    Cedar Crest, NM, USA
    Vehicle:
    2014 Prius
    Model:
    Two
    why is the jdm version slower than the regular one?
     
    #2 StarCaller, Mar 9, 2020
  3. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    All jdm are limited to 180km/h they do not allow above this speed. Now help in my problem
     
    #3 Imrand, Mar 10, 2020
  4. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,132
    50,049
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    Bad head gasket?
     
    #4 bisco, Mar 10, 2020
  5. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    6,173
    4,078
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    Thought I was demanding heh.
     
    #5 Grit, Mar 10, 2020
    StarCaller likes this.
  6. TMR-JWAP

    TMR-JWAP Senior Member

    Joined:
    Aug 12, 2016
    6,404
    6,062
    0
    Location:
    Columbia, SC
    Vehicle:
    2007 Prius
    Model:
    Touring
    So 180 kph is about 112 mph for those of us on this side of the big water.
    and 165 is around 103?

    How long was the car running at 180kph when it started getting weak? Did the check engine light or any warning light come on?

    If it still feels normal up to about 140, I would look at items that would limit it on the top end. That would be fuel flow, air flow or ignition timing. Possibly (remote) even some type of failure in the exhaust system that's preventing full flow.

    I would imagine, that if it was a head gasket, at that amount of rpm/load, it would be spewing coolant out of the overflow tank or spewing heavy vapor from the exhaust. (at least that's what would happen on older engines)
     
    #6 TMR-JWAP, Mar 10, 2020
    tvpierce likes this.
  7. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    It looks perfectly fine.
     
    #7 Imrand, Mar 11, 2020
  8. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    Thanks for ur reply i will check it for sure but as per my check list. I already cleaned catalytic 2nd i am going to replace spark plugs. Also egr pipe is in my mind too as it was also pending during my last service. If still not resolved then i will go for gasket. Open for suggestions if any other important thing missing. One important thing one of my battery cell is also bad that is also in my target list to be replaced.
     
    #8 Imrand, Mar 11, 2020
  9. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    6,173
    4,078
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    How did you determine that?
     
    #9 Grit, Mar 11, 2020
  10. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,132
    50,049
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    x ray glasss
     
    #10 bisco, Mar 11, 2020
    kc5dlo likes this.
  11. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    ☹️You are right but please check as i said above I want to check egr pipe few days back i cleaned up exhaust manifold but egr pipe was pending but it was also in bad condition 2nd is plugs. Will it be help full or i go straight to gasket ?
     
    #11 Imrand, Mar 12, 2020
  12. StarCaller

    StarCaller Senior Member

    Joined:
    Feb 15, 2014
    1,256
    706
    0
    Location:
    Cedar Crest, NM, USA
    Vehicle:
    2014 Prius
    Model:
    Two
    just drive it & check your coolant level once in awhile /
     
    #12 StarCaller, Mar 12, 2020
  13. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    As my understanding’i could be wrong’ gaskins should start producing overheating
     
    #13 Imrand, Mar 12, 2020
  14. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    Coolant level is perfectly fine up to mark and no issue.
     
    #14 Imrand, Mar 12, 2020
  15. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
    56,671
    39,221
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    How many kilometers on it?

    Have to say, 180 kmh is about 100 kmh faster than I ever go, lol.
     
    #15 Mendel Leisk, Mar 12, 2020
  16. kc5dlo

    kc5dlo Active Member

    Joined:
    Jun 16, 2015
    266
    163
    0
    Location:
    DFW TX
    Vehicle:
    2021 Prius
    Model:
    XLE
    Won't do 180 KPH? Sounds like everything is bad. You need a different car.
     
    #16 kc5dlo, Mar 16, 2020
  17. Imrand

    Imrand Junior Member

    Joined:
    Dec 29, 2019
    19
    1
    0
    Location:
    Pakistan
    Vehicle:
    2011 Prius
    Model:
    V
    Well i got it fixed. Let me tell u wht i did, i cleaned EGR pipe which was blocked. And also replaced 2 cell in my HV battery pak.
     
    #17 Imrand, Mar 28, 2020
    bisco likes this.
  18. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,132
    50,049
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    well done!(y)
     
    #18 bisco, Mar 28, 2020
  19. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
    56,671
    39,221
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    To unblock the EGR air flow, you need to thoroughly clean all the highlighted items shown here:

    upload_2020-3-28_7-28-2.png

    Hopefully that's what you've done? If not let me know, I can post some info and links.
     
    #19 Mendel Leisk, Mar 28, 2020
(You must log in or sign up to post here.)