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Top 2GNT Technical Performance/Engine topic #135542
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Subject: "P0300" Previous topic | Next topic
JoshDSMNov-24-11 05:33 PM
Member since Aug 29th 2010
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#135542, "P0300"


          

I am getting this code, now i know its a multi misfire and I have red what the causes could be. Now my car runs fine so i am thinking that its the coil pack?

Any help is needed......sorry if this is in the wrong place.

  

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AdministratorCODE4Nov-25-11 08:33 AM
Member since Nov 23rd 2003
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#135543, "RE: P0300"
In response to Reply # 0




          

Check the suggestions here:

http://www.obd-codes.com/p0300

---

2012 2500HD LML


  

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venge24Nov-30-11 04:44 PM
Member since Nov 15th 2009
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#135584, "RE: P0300"
In response to Reply # 0


          

this could also be a fuel problem, like injectors clogged with gunk or whatever, i had this problem, my filler tube was rotted onm the top and i didnt know it, so it kept putting crap in the tank and it was enough to get passed 2- filters i had in the system. i kept cleaning the injectors, and they kept clogging back up faster and faster, anyways, the morrell of the story,

take the injectors out, clean them with carb cleaner or TB cleaner, blow them out with air, ect, see if that works, its about an hours job for me since ive done it a dozen times or more

  

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venge24Nov-30-11 04:45 PM
Member since Nov 15th 2009
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#135585, "RE: P0300"
In response to Reply # 2


          

it also showed me the codes for multi cylender misfire, and also 1,2,3,4, depending on witch ones wore the worst

  

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JoshDSMNov-30-11 05:40 PM
Member since Aug 29th 2010
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#135588, "RE: P0300"
In response to Reply # 3


          

Okay, I got my codes red with a better scanner than I have it red p0300-4. I hope its not bad gas because I got a full tank of 93 the day before. Also got a new coil pack, wires and plugs to see if it works.

  

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