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Coil issue- 04 Ford F150 XLT 5.4 Triton

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Old 04-28-2013, 09:16 PM
handell35 handell35 is offline
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Coil issue- 04 Ford F150 XLT 5.4 Triton

Having problems with coil F (6) throwing a check engine light. Been repaired by Ford with a new coil. 2 weeks later threw another code same coil F (6). Went back they said plugs were loose and needed tightened, so they re tightened and sent me on my way. 1 month later threw another check engine light same coil F (6).

Any ideas?

For the time being I switched coil 6 with coil 5 to see if I got a code from 5. Then I could rule it as a bad coil. Drove over 200 miles without an issue as of right now.

Truck details
2004 Ford-F150 XLT 5.4 Triton- 107,xxx
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Old 04-29-2013, 12:44 PM
tooldad tooldad is offline
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Could be a bad connection in the COP wiring harness plug. Also, be aware, I replaced all 8 of mine with Motorcraft COP's one year ago and have just replaced the fifth bad one out of the batch. The bad thing is that I just replaced them last year as a preventative maintenance measure. So it could be a problem with the replacement COP too.

Did somebody say, don't fix it if it ain't broke?
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Old 04-29-2013, 02:37 PM
handell35 handell35 is offline
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Thanks for your help man. All I can do is wait now.
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