Ford Focus Forum, Ford Focus ST Forum - View Single Post - DTC P0351 - Ignition Coil "A". At the end of my rope.
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Old 03-26-2007, 10:51 PM   #2
Grumpy
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As no old forum regulars have jumped in here, and as I'm a new Duratec guy, my assistance is going to be limited, and some of my comments may appear obvious, but...... the problem appears to be a loss of the "trigger" (the coil driver circuit) to the one coil. It also seems to be a "heat soaking" thing going on here and it's interesting that "cycling" the IGN. affects this issue. Do you know if the power transistors are incorporated in each coil or are they in the PCM? Is there a relay involved? You don't appear to have accomplished the Check Functionality of the associated Coil Driver circuit, going by your "not done" note. If that's true, then that's where you have to go I believe. I hate to suggest it, but could the root cause be the PCM?
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