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2008 nissan altima 2.5 s po 300

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3 years 4 months ago #56518 by Stugie85
2008 nissan altima 2.5 s po 300 was created by Stugie85
Hello, I have a 2008 nissan altima 2.5s. It has 202,000 miles it has a po300 with flashing check engine light. replaced all plugs,coils, crank, cam, knock sensor,and mass airflow. i have 183-185 psi on compressing on all four cylinders. Good fuel pressure, and pulse from all injectors. No intake leaks. i can not get fire to cylinders to 3&4. i have swapped coils etc you name. I am 99 percent on that it could be the ECM or so. I am personally an LS person. Has anyone experienced this issue? Also it did have a colgged cat that was replaced. I know ECMs are rarely bad, but these days you can experience so very unique. Thanks Stugie,

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