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Jeep Wrangler YJ
YJ General Discussion
Single Point Injection Wiring
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<blockquote data-quote="jpjeep26uk" data-source="post: 441552" data-attributes="member: 20690"><p>ECU has been refurbed and seems to be working fine- better than before anyway!</p><p>I've narrowed down my issue to the single point injector.</p><p>Spark from the coil, spark on the ignition wire, spark at all four plugs.</p><p>Fuel is hitting the throttle body but does not seem to be allowed into the injector area to be mixed and then fired up.</p><p>Apparently the ECU sends an injector signal from pin 21 to the injector which allows the fuel in and off we go.</p><p></p><p>Can anyone tell me where the wiring from the ECU goes so I can trace the signal from the ECU to the injector to see if there is a faulty bit somewhere and is there a voltage I should be looking for at the injector when I turn the ignition on?</p><p></p><p>Many thanks from across the pond once again!</p></blockquote><p></p>
[QUOTE="jpjeep26uk, post: 441552, member: 20690"] ECU has been refurbed and seems to be working fine- better than before anyway! I've narrowed down my issue to the single point injector. Spark from the coil, spark on the ignition wire, spark at all four plugs. Fuel is hitting the throttle body but does not seem to be allowed into the injector area to be mixed and then fired up. Apparently the ECU sends an injector signal from pin 21 to the injector which allows the fuel in and off we go. Can anyone tell me where the wiring from the ECU goes so I can trace the signal from the ECU to the injector to see if there is a faulty bit somewhere and is there a voltage I should be looking for at the injector when I turn the ignition on? Many thanks from across the pond once again! [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Single Point Injection Wiring
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