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1999 ranger 3.0 4x . did a head swap . engine ran fine but pulled a p102 code, map . found some dirt and rust in plug. well I wired brushed the connector but forgot to turn off key and it sparked. now the truck wont stay running more than 45 seconds. Question is did I fry the computer????? I looked for blown fuses but as of last night could not find one. any help you can suggest
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