Thread: P0300 Random misfire - HELP!!
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Old Jan 9, 2018 | 11:16 AM
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onehundred80
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Default Re: P0300 Random misfire - HELP!!
Originally Posted by d2_mcgill
P0300 is a random misfire code, it just means more than one cylinder has been deactivated- The other codes change, sometimes they are p0301 and P0305, other times its P0304 and P0302, but those codes just tell me the car has shut off fuel and/or spark to a specific cylinder... So getting a P0304 code only tells me that cylinder 4 was shut down.... but it doesn't tell me why. The fact I'm not getting a consistent and repeated P030X code is what makes me think it's not plugs, coils or wires.

I will start By checking fuel pressure tonight and keep you all updated.

By the way, it's really great to have such passionate and helpful Crossfire enthusiasts at my fingertips... You guys are great!!!
Your problem lies in #2 and #4, they did not shut down, they were just not firing to spec. Switch the coils to other cylinders and see if the problem goes to the new cylinder position. switch the cables later if the problem stays in the #2 and #4 spots. Check the plugs as well.
It could be the injectors plugged or failing, but try the coils first. Looking at the plugs could give a hint about the injectors condition.
 
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