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Thread: 07 dts p0354 and p0300

  1. #1
    Fatmandoo is offline Cadillac Owners Member
    Automobile(s): 2007 DTS
    Join Date
    Dec 2013
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    12

    07 dts p0354 and p0300

    Rough idle at times. Drop in RPM at a stop light. Once the car get hot at a stop light it putts. I change the plugs tighten up the intake cover. The idle improved but not like normal now I'm getting a jerk like my trans is slipping. Please help I notice today at the light me being the only car there I had my windows down and smelled a lot of fumes.


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  3. #2
    Superjim's Avatar
    Superjim is offline Cadillac Owners Connoisseur
    Automobile(s): 2011 DTS Platinum
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    Jun 2006
    Location
    Ft. Worth
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    Re: 07 dts p0354 and p0300

    The coil on plug 4 is bad.

  4. #3
    Tom's Caddy's Avatar
    Tom's Caddy is offline Cadillac Owners Enthusiast
    Automobile(s): 2005 CTS/ 2008 DTS/ 2008 STS V8 N*/ 2011 CTS4 ALL W/D Pearl
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    Jul 2012
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    Re: 07 dts p0354 and p0300

    Quote Originally Posted by Fatmandoo View Post
    Rough idle at times. Drop in RPM at a stop light. Once the car get hot at a stop light it putts. I change the plugs tighten up the intake cover. The idle improved but not like normal now I'm getting a jerk like my trans is slipping. Please help I notice today at the light me being the only car there I had my windows down and smelled a lot of fumes.

    Please let us know how you made out.

  5. #4
    Sammy Z's Avatar
    Sammy Z is offline Cadillac Owners Connoisseur
    Automobile(s): CTS 03
    Join Date
    Jan 2008
    Location
    Chicago, IL
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    1,765

    Re: 07 dts p0354 and p0300

    I know it's an old post but mine had a bad coil on Cyl 1


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