0302 cylinder 2 misfire
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  1. #1
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    0302 cylinder 2 misfire

    My wife's 09 ctsv continues to throw a 0302 misfire cylinder 2 misfire code when using remote start. I pulled and replaced all spark plugs. #2 was fowled compared to the others. New plug wires and moved the original #2 ignition coil to another location. With all of that it will shut off remote start with a check engine light. I can sit in it at idle with it turned on and no codes. Driving is just like normal. 90,000 miles on it and mostly stock. It sees a lot of highway miles. Any ideas or recommendations would be appreciated.

    It's been doing it on cold days only so far. I'm wondering if something is kicking on and pulling some current away. Maybe new battery time??? I emptied the catch can just in case it was full but nothing there. I was thinking something could've been coming in through the intake. I have put in some sea foam lately. Maybe it's not liking it under remote start.

    Thanks.

  2. #2
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    The engine light came back on this morning under idle without remote start. Still nothing noticeable while driving. I did clean the airrade filter and reapply oil to it a few weeks ago. I am going to pull the sensors on the intake and clean them just in case of oil coating.
    09 CTSV Auto Sedan Thunder Grey
    - Airrade Intake
    - Rosen Headrest TV's
    - Performance Spare Tire Kit
    - Backup Camera in the rearview mirror

    09 G8 GT
    - Roto Fab CAI
    - Doug Thorley LT's & Mid Muffler Delete with Xpipe
    - Cam and DOD Delete
    - Dynotuned by Mad Tunes Racing (409rwhp)
    - Polished camaro 20's

    07 Chrysler Aspen

  3. #3
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    It could be a bad fuel injector.

    My previous car had a misfire in cylinder three and I did all of the troubleshooting steps that could be done in the "spark" system and never once thought that maybe the spark was there and the fuel was not there. I had to change all the injectors out anyways to go E-85 and guess what, new injectors, no more misfire.
    2012 Cadillac CTS-V - Sedan - Crystal Red Tintcoat

    Transmission: Automatic - stock
    Induction: Airaid with Green Filter
    Electronics: DashLogic
    Weight: 4280 pounds with 7/16 tank of gas, no one inside

    Previous: 2013 Mustang GT - Automatic - 410 RWHP

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  5. #4
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    Thanks for the input. The injector is my next step. It may need a cleaning.
    09 CTSV Auto Sedan Thunder Grey
    - Airrade Intake
    - Rosen Headrest TV's
    - Performance Spare Tire Kit
    - Backup Camera in the rearview mirror

    09 G8 GT
    - Roto Fab CAI
    - Doug Thorley LT's & Mid Muffler Delete with Xpipe
    - Cam and DOD Delete
    - Dynotuned by Mad Tunes Racing (409rwhp)
    - Polished camaro 20's

    07 Chrysler Aspen


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