Ignition Coil "D" Primary/ Secondary Circuit Missfire - F150online Forums


Ignition Coil "D" Primary/ Secondary Circuit Missfire

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Old 04-11-2012, 12:30 AM
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Ignition Coil "D" Primary/ Secondary Circuit Missfire

On my 2004 f150 fx4 i replaced all of my spark plugs at 175k a few months ago, I knew i would be needing coils with-in a few thousand miles so i figured id hold out a few months, recently i noticed a missfire every once and awhile but it would never stay more than 30 seconds or so, it seamed after hard acceleration it would start then stop on its own. My scanner read: Fault code: [P0354] Ignition Coil "D" Primary/ Secondary Circuit. So i went ahead and replaced all 8 of my coil packs with life time warranted brand which i paid $360 for the set. Thinking this would solve my problem, i drove yesterday with no problems, but today it did the exact same thing it was doing before i replaced my coils, and it thew the same code, and i cleared my Fault Log Manager before so i know im not reading the code from last time. I need some input on what is going on with my ignition system seeing as how i have replaced coils and plugs already. Thanks!
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Old 04-11-2012, 12:44 AM
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Edit

Last edited by MLWilley; 04-12-2012 at 08:43 AM.
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Old 04-11-2012, 08:35 AM
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NEVER quote a spam message. Report it so it can be deleted.
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Old 04-12-2012, 12:24 AM
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Any help with this link would be great appreciated Thanks!
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Old 04-12-2012, 12:28 AM
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Any help with this link would be great appreciated Thanks!
Edit and delete that spam you quoted. You understand yet ? Or are you the one responsible ?
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Old 04-12-2012, 12:30 AM
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What plugs did you use? what "brand" were these coils? for that much money you could have ordered Motorcraft and they are the best. Try getting these lifetime warranties to honer them. Check you heater hose above #4 for leaks. could be thats the cause..
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Old 04-12-2012, 02:55 AM
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Any help with this link would be great appreciated Thanks!
That link is SPAM. DO NOT CLICK IT.

Please edit your post where you quoted the spam.
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Old 04-12-2012, 08:49 AM
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Sorry about the spam deal, didn't know what to do about that, its edited now. Plugs are champion the "good" ones so I've been told. The coil's are BWD's E508 model number. Where is coil 4 located on my engine?
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Old 04-12-2012, 09:22 AM
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coil 4, passenger side,very back at the firewall.
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Old 04-12-2012, 11:07 AM
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ford engines run best with motorcraft parts. #4 is the firewall plug on the passenger side
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Old 04-13-2012, 12:08 AM
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Alright thanks! I'll check into it this weekend
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