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Q:

check engine light on had tune up had o2 sensors changed and fuel pump changed on 1997 Dodge Ram Van 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
when i drive on the road for some distance it will start to
missfire had engine changed diagnostic code shows that all cylinders misfires
(1) Answer
have the crank and cam sensors checked for syncrozation. a 300 random missfire usually indicates a crank sensor.

Roy