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Help! My tundra misfires between 3400-4000 rpm, both in park and while driving. I have replaced the fuel pump and filter, replaced the coils, and cleaned the injectors. I'm open to new ideas.
 

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I have similar problem with 00 4.7l 4x4, no code misfires, at 2-3000rpm, not on any particular cylinder, used snapon zeus, thoughts?
 
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