fuel injector?

1995 FORD F-150
150,000 MILES • 5.0L • V8 • 4WD • AUTOMATIC
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JOHN LEWIS4
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One injector does not work. Voltage test showed same on all. But when I ran a jumper wire from positive terminal of injector beside it to positive of one that does not work it works fine.
Jun 16, 2018 at 11:43 PM
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ASEMASTER6371
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Good afternoon.

So you have a twelve volt feed to the injector that is not functioning?

If you do, the other side goes to the ECM for grounding. Wth the injector hooked up, you should back probe the injector connector and you should have power to both wires.

If you do and the injector does not work, it is a failed quad driver in the ECM.

If you do not, then you have an open injector and the injector needs to be replaced.

Roy

https://www.2carpros.com/articles/how-to-test-a-fuel-injector
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May 29, 2021 at 10:54 AM