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

Red triangle, check engine, multiple misfires, slugish at times, help :'/

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Gaby03, Apr 18, 2024.

  1. Gaby03

    Gaby03 Junior Member

    Joined:
    Oct 19, 2021
    27
    8
    0
    Location:
    Puerto rico
    Vehicle:
    2004 Prius
    Model:
    One
    Previously i had owned a 04 prius great car did alot of repairs on it but kept it on top of things, unfortunately i crashed the car, i survived unscaved thankfully, recently i got a 05, and im getting very weird problems ive tried diagnosing it but here are the simptoms

    Red triangle, check engine and brake light at one point abs light, i took it to autzone for they're free scan stuff i got misfires on all 4 cylenders codes lead me to replacing ignition coils and sparkplugs, i did all 4 old coils and sparkplugs where worn, unfortunately it did not fix the issue

    At times trying to accelerate the car seems to stall a bit, the hv batt has been stuck at 1 bar but it throttles at highway speeds just fine most of the times, car drives in ev mode for about half a mile or so when the the battery shows its almost full, after triangle and lights it stays at 1 bar, the issue leaves when i unplug the 12v and reconect it during nightime vehicle runs fine most of these issues have been at day time when its hot, i checked the inverter pump and its fine working, im already down to it being a battery failure on the highvoltege one, ill soon try and replace cells its not recommend but the guy i bough it from had cells replaced 7 months ago and gave us ones in good condition according to him, either if any of you has input that would be great, i also wonder why the misfire codes persist even when all 4 sparks and coils where swaped thank you!

    227k miles in the odometer
     
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,927
    49,058
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i would scan it with tech stream or autel. even dr. prius will show you a battery failure
     
    Brian1954 likes this.
  3. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    8,231
    1,431
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Are you losing any coolant The little jug that's behind the radiator in between the engine Is it empty has it been empty misfires generally even though the coils and plugs have been changed can be somewhat catastrophic. Now we're wondering if you've got water leaking into a cylinder or cylinders quenching the fire causing the misfire and I imagine some clanking and clunking.
     
  4. Gaby03

    Gaby03 Junior Member

    Joined:
    Oct 19, 2021
    27
    8
    0
    Location:
    Puerto rico
    Vehicle:
    2004 Prius
    Model:
    One
    There is no direct engine noise that would lead me to belive that is the case, nore is there smoke coming from the exhaust either, which is good to some extent...
     
  5. jeff652

    jeff652 Senior Member

    Joined:
    Feb 6, 2014
    599
    623
    0
    Location:
    Idaho
    Vehicle:
    2005 Prius
    Model:
    II
    You might try finding a trickle charger and discharger in your area that you could use to maybe revive your HV battery.

    Or here is a link to order one online: Hybrid Automotive – Extending the Life of Your Hybrid

    If you have some failed modules, this website also sells some pretty reliable ones that would work for you.