Yep, Check Oil Regularly; Problem Now is Random/Multiple Cylinder Misfires on 2, 3, and 4

Discussion in 'Gen 2 Prius Technical Discussion' started by NoThrowningRocks, Jan 4, 2020.

  1. NoThrowningRocks

    NoThrowningRocks Junior Member

    Joined:
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    Location:
    Atlanta, GA
    Vehicle:
    2006 Prius
    Model:
    II
    [I've included a PDF version of this post if you find it more readable; please see attachments]

    I've read poor quality/old spark plugs, bad fuel, ignition wires, etc are all potential sources of cylinder misfires. Before running out to replace things with no method to my madness, I'm hoping to get some guidance on the highest probability cause(s) at lowest cost and start from there. Recommendations on particular brands (or ones to avoid) as also much appreciated.

    I sat in the car, at 2006 Prius with unknown mileage on the engine for 15-20 minutes with the car intermittently idling and there were no problems. Also, kept foot on accelerator to keep it humming around 2,000 RPM and everything was fine. On other hand, the engine sounded awful after putting the car reverse and then pulling forward into the parking space.

    Not sure if this rules out bad fuel as the source of the problem, but thought information worth passing along.

    Techstream generates the following codes: P0300, P0302, P0303, P0304, C1241, B1421 and B1271.

    Below I've provided additional data from Techstream that may be helpful. Thank you in advance for any help you can offer.

    ENGINE AND ECT LIVE:
    upload_2020-1-4_20-42-59.png
    upload_2020-1-4_20-55-17.png

    P0300
    upload_2020-1-4_20-35-50.png

    P0302
    upload_2020-1-4_20-37-9.png

    CONTINUED
    upload_2020-1-4_20-38-48.png

    CONTINUED
    upload_2020-1-4_20-33-0.png

    Can anyone tell from the data below if the 12V battery needs to be replaced? I read elsewhere in these reports it shows BM Voltage at 13.9 (is that the hybrid?)

    upload_2020-1-4_20-21-36.png

    Thank you, particularly if you made it this far through the post! I really appreciate it. upload_2020-1-4_20-19-2.png upload_2020-1-4_20-21-36.png upload_2020-1-4_20-24-11.png upload_2020-1-4_20-24-40.png upload_2020-1-4_20-26-14.png upload_2020-1-4_20-28-8.png upload_2020-1-4_20-33-0.png upload_2020-1-4_20-37-9.png upload_2020-1-4_20-38-48.png upload_2020-1-4_20-42-59.png upload_2020-1-4_20-55-17.png upload_2020-1-4_20-19-2.png upload_2020-1-4_20-21-36.png upload_2020-1-4_20-24-11.png upload_2020-1-4_20-24-40.png upload_2020-1-4_20-26-14.png upload_2020-1-4_20-28-8.png upload_2020-1-4_20-33-0.png upload_2020-1-4_20-35-50.png upload_2020-1-4_20-37-9.png upload_2020-1-4_20-38-48.png upload_2020-1-4_20-42-59.png upload_2020-1-4_20-55-17.png upload_2020-1-4_20-19-2.png upload_2020-1-4_20-21-36.png upload_2020-1-4_20-24-11.png upload_2020-1-4_20-24-40.png upload_2020-1-4_20-26-14.png upload_2020-1-4_20-28-8.png upload_2020-1-4_20-33-0.png upload_2020-1-4_20-35-50.png upload_2020-1-4_20-37-9.png upload_2020-1-4_20-38-48.png upload_2020-1-4_20-42-59.png upload_2020-1-4_20-55-17.png

    Life's given me a swift kick in the balls and I really appreciate any help you can offer.
    House and all personal belongings destroyed by fire Feb. 8, 2015; Had to fight USAA insurance company for almost four years to get personal property benefits (still haven't received all home benefits); loan mortgage servicer, LoanCare, who holds *more* money in an escrow account from insurance loss proceeds than I owe on the mortgage - is wrongfully withholding money to rebuild our home despite sending over 2,500 pages of requested documentation (contractor invoices, lien waivers, etc,), - so house still not rebuilt.

    Now LoanCare is trying to foreclose on our "lot" - even though they technically can't since they already have more than enough money to pay off the mortgage with escrow funds, since I stopped payments; Paid over $120K to rent a cockroach-infested apartment so cramped our two teenage daughters share a bed and, adding insult to injury, I paid over $50K in mortgage interest over past five years for money I'm not borrowing since the loan servicers not releasing funds for rebuild.

    Oh, and getting back to the Prius, the mechanic who replaced the engine this summer after I failed to check the oil regularly (every 5,000 miles is a bad rule of thumb, especially for older vehicles) installed an engine without a VIN or serial, which is illegal in Georgia, and means it's likely stolen. I've contacted the police and they aren't doing anything about it. So

    Apologies for the rant...
     

    Attached Files:

  2. JC91006

    JC91006 Senior Member

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    Maybe that's your bad engine with the serial scraped off? Easier than replacing an engine right?
     
  3. Dxta

    Dxta Senior Member

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    Location:
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    Vehicle:
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    I couldn't see the info on your 12V battery on the results here.

    However, it appears cylinders #2,3,&4 is where you've the problems.

    You got to take a look at your spark plugs, ignition coils, dirty fuel injector nozzles, etc. If all those checked fine, then you may have problems with the cylinder gasket.

    Surprisingly, your HV pack is still in good shape for now. No codes for it.
     
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  4. spdracrm3

    spdracrm3 Junior Member

    Joined:
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    Location:
    estacada or
    Vehicle:
    2004 Prius
    Model:
    V
    Also toyota has a TSB for prius misfires due to water leaking down from the windshield cowl and into the COP wells(there's a reseal procedure) .
    Pull the COPs and look for water or rust in wells(if there's is dry them out with compressed air), and as stated pull sparkplug and inspect gap.

    SM-G960U ?
     
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