Misfire code popping up!!!
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  • 1 Post By glake89
Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, Misfire code popping up!!! in Cadillac SRX Forums; I have a 2005 SRX V8 AWD with a misfire code. I took it to the dealership twice now and ...
  1. #1
    Chief MaGee is offline Cadillac Owners Member
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    Misfire code popping up!!!

    I have a 2005 SRX V8 AWD with a misfire code. I took it to the dealership twice now and they changed the spark plugs, coil and injectors but the engine still has a slight shake to it while idle. The advisor told me it was carbon buildup and to buy lucus deep clean fuel system cleaner. I ran it through but the engine still has the slight shake. Is there anything else I can do?

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  3. #2
    arw1510 is offline Cadillac Owners Enthusiast
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    Check the motor mounts.

  4. #3
    Ludacrisvp's Avatar
    Ludacrisvp is offline Cadillac Owners Connoisseur
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    Re: Misfire code popping up!!!

    Do you still have a misfire reported?
    Bad mounts won't cause a misfire but would explain the engine shake.

  5. #4
    arw1510 is offline Cadillac Owners Enthusiast
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    Re: Misfire code popping up!!!

    Quote Originally Posted by Ludacrisvp View Post
    Do you still have a misfire reported?
    Bad mounts won't cause a misfire but would explain the engine shake.
    Yeah, good point. I assumed after replacing everything that the code as gone. Well see how it comes out

  6. #5
    Chief MaGee is offline Cadillac Owners Member
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    Re: Misfire code popping up!!!

    Yes...the check engine light is still on reporting the misfire. I'm going to clean the throttle body today to see if that helps the shaking calm down.

  7. #6
    DaddysCaddy13 is offline Cadillac Owners Member
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    Re: Misfire code popping up!!!

    Do you know if they ran a compression test on it?

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  8. #7
    glake89's Avatar
    glake89 is offline Cadillac Owners Connoisseur
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    Re: Misfire code popping up!!!

    Well, which specific 'misfire' codes are you getting?
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  9. #8
    Chief MaGee is offline Cadillac Owners Member
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    Re: Misfire code popping up!!!

    They told me at the dealership that they ran a compression test but didn't tell me the details about the results. I assume they were okay since they didn't tell me that they were bad. The misfire is coming out of cylinder 4.

  10. #9
    glake89's Avatar
    glake89 is offline Cadillac Owners Connoisseur
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    Re: Misfire code popping up!!!

    I was looking for DTC#s. 1 can of cleaner won't do much, you need to double dose it (read instructions for qty./gals) and do that for several tankfuls. Read the 'Full throttle' piece in the tech archive that is in the forum header.
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  11. #10
    repnatl is offline Cadillac Owners Enthusiast
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    Quote Originally Posted by glake89 View Post
    I was looking for DTC#s. 1 can of cleaner won't do much, you need to double dose it (read instructions for qty./gals) and do that for several tankfuls. Read the 'Full throttle' piece in the tech archive that is in the forum header.
    P0304 I'm assuming

  12. #11
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    Re: Misfire code popping up!!!

    Quote Originally Posted by Chief MaGee View Post
    They told me at the dealership that they ran a compression test but didn't tell me the details about the results. I assume they were okay since they didn't tell me that they were bad. The misfire is coming out of cylinder 4.
    Hello Chief MaGee,

    I apologize that you are experiencing these concerns with your SRX. I do see that you are currently working with a Cadillac dealership. If you would like any assistance in working with them, please feel free to private message or send me an email to socialmedia@gm.com with “ATTN GREG” in the subject line so that it gets delivered straight to me. I would need your name, contact info, VIN, mileage, and dealership that you are currently working with. Thank you very much for taking the time to read my post. I hope to hear from you soon.

    Gregory W.
    Cadillac Customer Care

  13. #12
    Chief MaGee is offline Cadillac Owners Member
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    Re: Misfire code popping up!!!

    Thanks everyone...I'm going to try the WOT fix to see if that helps. Hopefully it does because I like the SRX and don't wanna have to get rid of it.

  14. #13
    Ludacrisvp's Avatar
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    Re: Misfire code popping up!!!

    I can understand that its frustrating to have the misfire issue but I don't believe it is an issue that would warrant the replacement of the SRX.
    Are you getting spark to that plug?
    Are you getting fuel to that cylinder?
    Are you getting air to that cylinder?

  15. #14
    Chief MaGee is offline Cadillac Owners Member
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    Re: Misfire code popping up!!!

    Did the WOT fix and now my engine is not so rough. Barely feel it at idle but the engine light is still on.

  16. #15
    glake89's Avatar
    glake89 is offline Cadillac Owners Connoisseur
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    Re: Misfire code popping up!!!

    OK Chief, what specific code(s) do you have now? Then we can be more helpful.
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