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2002 toyota tundra 4.7l 4wd access cab
Last night my truck started running really rough. Felt it before when ignition coils have gone out. Luckily I have an extra. Problem would not go away when I switched them out. Had my codes read. P0300, also 301 and 306. So switched coils from cylinder 1 to 4 to see if problem follows. Next codes: p0300, 301, 304. New spark plugs. P0300, po301, p0307, p0308. Cleaned maf, checked to hear my injectors r working, clicking well. Coded 1 more time. P300 p0302 303. Whats next? Why diff cylinders each time get code read? Suggestions please
 
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