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Lexmex Lexmex is offline

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About Me

  • About Lexmex
    State
    Miami, Florida
    Gender
    Male
    Lexus Car
    RX300 AWD
    Year of your Lexus
    1999
    Country of Residence
    US
  • Signature
    Homepage of my 1999 RX300 AWD

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  • Join Date: 04-08-04

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  1. 07-01-19 10:25 AM
    Hello,

    RE: 2004 LS430 with 91K

    I thought I would reach out to you for troubleshooting assistance with a P0303 code which accompanied the Engine & VSC Check lights, I haven't attempted to reset the codes, since I believe I have a real issue, i.e. the car is running rough. I affirmed Cylinder 3 is misfiring as there is no change in the idle when opening the coil connection. Additionally, the spark plug/coil & wiring appear functional as I am getting a spark at the coil. Spark generated in Cylinder 3 looks very much like Cylinder 5 spark. This coincides with operating Cylinder 3 coil in Cylinder 5, & vica versa (C5 coil in C3 does not restore idle). Nevertheless, put in a new spark plug into Cylinder 3. Seems like something fuel related is contributing to the C3 misfire. I am hesitant to use fuel injector cleaner or attempt additional troubleshooting without some guidance or input. Appreciate your thoughts. TIA

    2ManyLexus

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