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    Idle low when radiator fan kicks on

    When I was stopped the radiator fan kicked on then the car went so low at idle that it cut off started right back up not sure what the problem is no check engine light 2015 1.8 L ff
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    Car sometimes has rough idle and lurching motion.

    Mine only happened when the car was cold. Once it heated up, it quit doing it. I inspected the ignition coil. The place where the spring goes into the boot (plastic part) was cracked slightly. That's what caused the surging when cold in the morning. What did heated up, it expanded, and I didn't...
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    Help - Surging/Bucking/Jumping

    My fix was changing the coil The plastic piece that holds the little Spring in gets cracked overtime and seems to set better once the car is warmed up replaced the ignitiin coil and the car hasn't had the problem since
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    SONIC SURGING WHEN COLD NO CHECK ENGINE LIGHT

    I kept having a surgeing problem when the engine was cold it would come and go but it would surge sometimes and I couldn't figure out what the problem was because the check engine was not coming on at all. I finally figured it out it was the coil . Once I replaced the call it went away and...
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