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Jeep Wrangler YJ
YJ General Discussion
91 yj 2.5 has no spark at coil
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<blockquote data-quote="machoheadgames" data-source="post: 433329" data-attributes="member: 18789"><p>It always has 12V when the key is on because of the ASD circuit. The computer pulses the ground of the coil to fire the spark plugs. </p><p></p><p>Bad ignition pickup coil (cam position sensor) maybe? I dunno. PCM seems fine based on the fuel pump priming and the CEL coming on.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 433329, member: 18789"] It always has 12V when the key is on because of the ASD circuit. The computer pulses the ground of the coil to fire the spark plugs. Bad ignition pickup coil (cam position sensor) maybe? I dunno. PCM seems fine based on the fuel pump priming and the CEL coming on. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
91 yj 2.5 has no spark at coil
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