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Question: My 97 Ford Expeditions Check engine light came on blinking while driving 75mph

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CLC58, Denver, CO, January 16, 2013, 11:04
 Rookie

This happened 3 months ago and mechanic replaced plungs cords and coil. What is causing it this time? 5.4 L engine with all the bells and whistles. Automatic 4 WD XLT edition

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  • Answer #1

    Greg's Orange Auto (8385 Answers) , Orange, CA - (714) 361-9355
    globalhelper January 16, 2013, 12:46
     Master

    most likely misfires but scan codes and post so we can adv. could be bad insulators if they weren't repl also

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    CLC58, January 17, 2013, 05:26
     Rookie

    I got codes p0304, cylinder 4 misfire and p0171 System adaptive fuel too lean Bank 1

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    globalhelper, January 17, 2013, 05:54
     Master

    so you have lean bank 1 and misfire #4 ck that cyl and ck for poss vac leak on bank 1

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    CLC58, January 17, 2013, 06:14
     Rookie

    OK thanks so much!

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