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Why is my check engine light is still on when I change mass air flow sensor

(1999 Ford Explorer)
in Memphis, TN on January 04, 2012
failed ho2s21,fuel injectors
Displaying 1 answer & 0 comments
Popular Answer
on January 04, 2012
mass air flow is not the issue. we need the exact code number to further help you. a code 11 is for the mass air flow system.

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