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Jeep Wrangler JK
JK General Discussion
No spark from new coil #3 but fine on #6
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<blockquote data-quote="Jdad" data-source="post: 443660" data-attributes="member: 22587"><p>Yes no spark from 3 on old coil so I replaced it. It was fine for about an hour then same thing happened. Cel started blinking and threw same code p0303 so I checked for spark again and nothing. I used the same plug and checked every post for spark and all were good except 3. I checked for constant voltage at the clip and get a steady 10.8 volts. I understand it should be between 10 and 12 volts so it should be ok. Right ? I used a piece of hose to connect plug directly to coil to eliminate a bad wire but they are brand new as well. I also get a pulse signal from the other 3 wires at the clip. If u have a different method to check for spark I'm all ears. It's my kids jeep and he's busting my balls here. Lol what other tests can I do ?</p></blockquote><p></p>
[QUOTE="Jdad, post: 443660, member: 22587"] Yes no spark from 3 on old coil so I replaced it. It was fine for about an hour then same thing happened. Cel started blinking and threw same code p0303 so I checked for spark again and nothing. I used the same plug and checked every post for spark and all were good except 3. I checked for constant voltage at the clip and get a steady 10.8 volts. I understand it should be between 10 and 12 volts so it should be ok. Right ? I used a piece of hose to connect plug directly to coil to eliminate a bad wire but they are brand new as well. I also get a pulse signal from the other 3 wires at the clip. If u have a different method to check for spark I'm all ears. It's my kids jeep and he's busting my balls here. Lol what other tests can I do ? [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
No spark from new coil #3 but fine on #6
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