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What causes this?

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Old Apr 4, 2025 | 04:21 PM
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What causes this?

2011 F250 6.2 104K I took my truck out of hibernation and went for a ride. I noticed a little chugging at light throttle in 6th gear. Then later after a good ride the check engine light starts flashing and I have no power. I came to a stop and the light went away and it ran normal for a while. Hooked up Live Link and did a data log and this is what stands out. Any idea what caused this spike? Shouldn't that value be close to 1? What else should I be looking at?




Thank you all in advance for your help.
 
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Old Apr 4, 2025 | 10:30 PM
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Flashing check engine light is usually a misfire. What was the code registered?
 
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Old Apr 5, 2025 | 08:48 AM
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I immediately pulled over and checked the dtc tab. No code. I am going to monitor the misfire PIDS.
 

Last edited by brienkd; Apr 5, 2025 at 08:50 AM. Reason: mis spelling
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Old Apr 5, 2025 | 02:08 PM
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Threw a code. P0307 cylinder 7 misfire.
 
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Old Apr 6, 2025 | 01:38 PM
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Turns out that coil is missing a resistor. So $64K Q. Where do I get a resistor? The service manual does not show it in the ignition component exploded view.
 
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Old Apr 6, 2025 | 01:44 PM
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The resistor that goes between the coil and the spring in the boot? They usually come with a replacement boot kit.
 
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Old Apr 6, 2025 | 02:08 PM
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Yes that resistor. Replaced all coils wires and plugs. Apparently they neglected to include a resistor for that coil. I suppose I will have to get a replacement boot.
 
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