Misfire code won't rev over 2500 rpm

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Robert Couchman, Feb 12, 2019.

  1. Robert Couchman

    Robert Couchman Junior Member

    Joined:
    Oct 9, 2014
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    Vehicle:
    2005 Prius
    Model:
    III
    This is a 2005 with 278k on the clock, new plugs in the last 500miles (NGKs) my wife started her commute to work the other day had to limp home at low speed. Pulled the codes (Torque Pro OBD!!) PS302 was the only error code, switched coil packs between cyl 2 and 3 no change same error code. I have never done the EGR maintenance, wonder if that might be useful. Here are the test outputs:
    Mode $06 report generated by Torque for Android
    Thanks in advance for any light you can shed on this:)

    ================================================


    Vehicle VIN: Not present

    Vehicle Manufacturer: Unknown

    Vehicle Calibration ID: 34705200


    Test report:

    ------------------

    MID:$01 TID:$8e

    - O2 Bank 1 Sensor 1

    Max: 7.99527 Min: 0

    Test result value: 1.12911

    PASS

    ----

    MID:$02 TID:$07

    Minimum sensor Voltage for test cycle(calculated) - O2 Bank 1 Sensor 2

    Max: 0.233V Min: 0V

    Test result value: 0.135V

    PASS

    ----

    MID:$02 TID:$08

    Maximum sensor Voltage for test cycle(calculated) - O2 Bank 1 Sensor 2

    Max: 65.535V Min: 0.605V

    Test result value: 0.855V

    PASS

    ----

    MID:$02 TID:$8f

    - O2 Bank 1 Sensor 2

    Max: 1.19895 Min: 0

    Test result value: 0.23363

    PASS

    ----

    MID:$21 TID:$a9

    - Catalyst Monitor Bank 1

    Max: 9.99393 Min: 0.1098

    Test result value: 0.2504

    PASS

    ----

    MID:$3b TID:$c1

    - EVAP Monitor (0.090")

    Max: 0.182kPa Min: 0.001kPa

    Test result value: 0.006kPa

    PASS

    ----

    MID:$3c TID:$c2

    - EVAP Monitor (0.040")

    Test incomplete or dependant test failed

    --

    MID:$3d TID:$c7

    - EVAP Monitor (0.020")

    Max: 3.8S Min: 0S

    Test result value: 0S

    PASS

    ----

    MID:$3d TID:$c8

    - EVAP Monitor (0.020")

    Max: -0.294kPa Min: -32.768kPa

    Test result value: -1.905kPa

    PASS

    ----

    MID:$3d TID:$d4

    - EVAP Monitor (0.020")

    Max: 32.767kPa Min: 0.927kPa

    Test result value: 2.319kPa

    PASS

    ----

    MID:$3d TID:$d5

    - EVAP Monitor (0.020")

    Max: 3.9S Min: 0S

    Test result value: 0S

    PASS

    ----

    MID:$3d TID:$d6

    - EVAP Monitor (0.020")

    Max: 327.66998 Min: -4.11

    Test result value: 0.97

    PASS

    ----

    MID:$a1 TID:$0b

    EWMA Misfire counts (average) for last 10 drive cycles - Misfire Monitor General Data

    Max: 65,535Count Min: 0Count

    Test result value: 352Count

    PASS

    ----

    MID:$a1 TID:$0c

    Misfire counts for last/current driving cycles(calculated) - Misfire Monitor General Data

    Max: 65,535Count Min: 0Count

    Test result value: 9Count

    PASS

    ----

    MID:$a2 TID:$0b

    EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 1 Data

    Max: 65,535Count Min: 0Count

    Test result value: 0Count

    PASS

    ----

    MID:$a2 TID:$0c

    Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 1 Data

    Max: 65,535Count Min: 0Count

    Test result value: 5Count

    PASS

    ----

    MID:$a3 TID:$0b

    EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 2 Data

    Max: 65,535Count Min: 0Count

    Test result value: 349Count

    PASS

    ----

    MID:$a3 TID:$0c

    Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 2 Data

    Max: 65,535Count Min: 0Count

    Test result value: 1Count

    PASS

    ----

    MID:$a4 TID:$0b

    EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 3 Data

    Max: 65,535Count Min: 0Count

    Test result value: 0Count

    PASS

    ----

    MID:$a4 TID:$0c

    Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 3 Data

    Max: 65,535Count Min: 0Count

    Test result value: 3Count

    PASS

    ----

    MID:$a5 TID:$0b

    EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 4 Data

    Max: 65,535Count Min: 0Count

    Test result value: 0Count

    PASS

    ----

    MID:$a5 TID:$0c

    Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 4 Data

    Max: 65,535Count Min: 0Count

    Test result value: 0Count

    PASS

    ----



    End of report.
     
  2. JC91006

    JC91006 Senior Member

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    Maybe the plugs are not torqued down? You can try putting the old plugs back in and see if things change
     
  3. Robert Couchman

    Robert Couchman Junior Member

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    I torqued the new plugs and ran several hundred miles after they were installed, so I am confident it is not the issue. Thanks for your reply
     
  4. Patrick Wong

    Patrick Wong DIY Enthusiast

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    G2 does not have an EGR system.
     
  5. JC91006

    JC91006 Senior Member

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    If you get this error after you change your plugs, that is where I would investigate first. By taking out that plug that's misfiring
     
  6. Robert Couchman

    Robert Couchman Junior Member

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    Thanks!
     
  7. Robert Couchman

    Robert Couchman Junior Member

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    removed plugs 2 and 3 (the misfiring one is the lean one on the right, the left one is rich I suspect because I previously had switched coil packs to isolate the problem and only ran the ICE for a minute. i am thinking maybe a bad injector? prius plugs.jpg
     
  8. SFO

    SFO Senior Member

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    Welcome to PriusChat!!

    If the COPS are good (no visual carbon tracking), and given the DTC and the swap you've reported (P0302), my 'WAG' is you need to service/replace the injectors with used ($25 for four), or new ($$$), or send off your current set to be tested and cleaned ($60+).
     
  9. Robert Couchman

    Robert Couchman Junior Member

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    Thanks,
    Can you recommend a resource for used replacement or rebuilding?
    best,
     
  10. SFO

    SFO Senior Member

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    I picked up a rebuilt (used) set on ebay for $23 including shipping, they were mismatched and one of the intake o-ring retaining caps appeared to be slightly cocked/angled. But after talking to someone on the phone, I have no doubt they would've replaced one or more if it was required. The seller was a yard in the Los Angeles valley, the injectors appeared to be clean/rebuilt with new rubbers/seals etc. They worked after installation, though I also checked the resistance before install.

    Here is a link to 'AtlantaAuto' / ebay store:

    Atlanta Auto Dismantling - Auto Parts & Supplies - 7259 Fulton Ave, Valley Glen, North Hollywood, CA - Phone Number - Yelp
    Atlanta Auto | eBay Stores

    There are also New 'non-denso' (chinese) offerings for similar pricing, which may work given the light duty application. But from what I've read elsewhere some of the higher CC versions can fail to deliver fuel at greater duty cycles, which causes a lean burn and damages the engine at best. Would be interesting to see how a new set of (4) four injectors for under $30 performs.

    Here are a some places I've previously bookmarked for reconditioning, some do charge for return shipping though :

    http://fuelinjectorspecialists.com (website is down, this is who I considered using as they include pics with their report)

    Fuel Injector Specialists LLC in Wheat Ridge, CO - (303) 456-0789 - Chuck is/was the owner.

    You can read some of the old website here : fuelinjectorspecialists.com - Fuel Injector Specialists - Home - Wheat Ridge, CO

    ==

    Fuel Injector Cleaning and Flow Testing- Fuel Injector Service Utah, Salt Lake City, 84115

    Injector-Rehab Fuel Injector Cleaning Services

    Fuel Injector Cleaning and Flow Testing Service. Injector Repair LLC

    Ultrasonic Fuel Injector Cleaning Service - InjectorExperts.com

    Fuel Injector Cleaning and flow testing service, refurbish reconditioning

    Fuel Injector Clinic

    Fuel Injector Service -- Pro Flow | Ultrasonic fuel injector cleaning and flow testing specialists

    Please update if you use one of the above services. Would be interested in seeing the before and after flow rates after 278k.
     
    Raytheeagle and JC91006 like this.
  11. Robert Couchman

    Robert Couchman Junior Member

    Joined:
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    Vehicle:
    2005 Prius
    Model:
    III
    Thanks for the extensive reply, as it turns out I ordered a set of injectors from AtlantaAuto ($26.28 wi shipping for 4 reman injectors)
     
    SFO likes this.
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