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Jeep Wrangler YJ
YJ General Discussion
94 YJ turns over but, won’t start
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<blockquote data-quote="machoheadgames" data-source="post: 425625" data-attributes="member: 18789"><p>Did you figure this out yet? Did you check for 12V at the plug for the coil? If you have 12V at the coil but no fire, then it’s a faulty coil. They do go bad and they will crank all day and not start when they do.</p><p></p><p>If the coil doesn’t have 12V, then the PCM isn’t providing it, likely due to a bad crank position sensor, ASD relay, etc. Most common is crank position sensor. My solution for testing that sensor is throwing a part at it. If it fixes the problem, yay. If not, keep as a spare.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 425625, member: 18789"] Did you figure this out yet? Did you check for 12V at the plug for the coil? If you have 12V at the coil but no fire, then it’s a faulty coil. They do go bad and they will crank all day and not start when they do. If the coil doesn’t have 12V, then the PCM isn’t providing it, likely due to a bad crank position sensor, ASD relay, etc. Most common is crank position sensor. My solution for testing that sensor is throwing a part at it. If it fixes the problem, yay. If not, keep as a spare. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
94 YJ turns over but, won’t start
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