Question about AEM 2001 Ford Ranger - 4.0L V6 - Brute Force Air Intakes

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I have an intermittent misfire on one cylinder.

I replaced plugs, wires, coil pack and it still misses.

Posted by Anonymous on

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Spark plug wire is the main cause, have a look under the bonnet with the motor running. Do this at night or in a dark place and look for sparks.
Check the wiring and connectors from the coil pack back into the loom and up to the ECU/ECM. If the wiring loom, coil packs and spark wires are all good it must be the drivers in your ECU/ECM.

Posted on May 02, 2015

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Could be bad connection to injector or bad injector?

Posted on May 02, 2015

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