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Stumped by P0301 and P0302

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Jeff80465, Jul 24, 2016.

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  1. Jeff80465

    Jeff80465 Junior Member

    Joined:
    Mar 16, 2013
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    Vehicle:
    2006 Prius
    Model:
    N/A
    I did spray some ether around the general vicinity some time ago thinking there may be a vacuum leak near #1. No such luck. Also used a tube to try to listen for a vacuum leak. Didn't make any difference
     
    #21 Jeff80465, Sep 10, 2016
  2. goku9384

    goku9384 Member

    Joined:
    Oct 3, 2014
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    Location:
    San Diego, CA
    Vehicle:
    2006 Prius
    Hello just wondering if you were able to fix the problem. My car sounds exactly the same I have confirmed all my spark plugs and coils are working fine.
     
    #22 goku9384, Feb 11, 2017
    SFO likes this.
  3. Angel209

    Angel209 Junior Member

    Joined:
    Jun 15, 2019
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    Location:
    Stockton
    Vehicle:
    2007 Prius
    Model:
    N/A

    Which one fixed the p0302
     
    #23 Angel209, Jul 31, 2019
  4. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
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    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    On a 200,000 + mile car misfire's that move around from cylinder to cylinder sometimes reflect engine damage and is mechanical.

    You may want to put the engine in inspection mode and listen to the bottom end of the engine by crawling under the front of the car when the engine is running. In inspection mode the engine runs continuously.

    Go on youtube search

    Prius inspection

    it will show you the chicken dance to get into that mode. harbor Freight sells a real nice mechanics stethoscope. It works great. Probe the engine while running listen for bad lower end sounds and injector firing. Listen for misfires.
    On my car the engine runs very very smoothly in inspection mode.
     
    #24 edthefox5, Jul 31, 2019
    Last edited: Jul 31, 2019
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