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  1. S

    Cyl 1 no spark / Crank sensor voltage question.

    update - still could use some suggestions So for fun I switched the wires for cyl 1 and 5 with eachother. Cyl 1, firing from coil location 5 fires just fine at twice rpm. Cyl 5, now trying to fire from coil location 1 intermittently fires below 1000rpm. Above 1000 rpm I get no signal...
  2. S

    Cyl 1 no spark / Crank sensor voltage question.

    91 Explorer XLT -sigh- No spark to cylinder 1 (and only cylinder 1, cylinder 5 is just fine). So far I have replaced: spark wire (swapped with next cyl), new plug, used CKP sensor, used ICM, used PCM, used coilpack (resistance checks out) with items from local pick and pull. I suppose I...
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