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If you"ve been wondering how to check the Coil-On-Plug ignition coils on her Ford auto or van (with a 4.6L or 5.4L V8) to check out if one or several are bad and are causing a misfire, this is the short article for you.

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As is the custom here at piersonforcongress.com, the tests actions are described in detail and the diagnostic/troubleshooting is achieved in number of easy steps.

OK, before we jump right into the COP coil tests, permit me simply make you conscious where girlfriend can uncover a finish list that 4.6L and also 5.4L ‘How to Test’ short articles that are located in this internet Site and also at troubleshootmyvehicle.com and this list is discovered here: Ford 4.6L, 5.4L table of contents Of Articles.

One last thing, I have written one more 4.6L, 5.4L COP coil short article that is a little leaner 보다 this one, you have the right to take a look at it here: Ford 4.6L, 5.4L Coil-On-Plug Misfire tests (this write-up is located at troubleshootmyvehicle.com).

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Puedes encontrar este tutorial en Español aquí: Pruebas: Bobinas de Encendido Individuales (COP) -4.6L, 5.4L Ford (at: autotecnico-online.com).

Common symptom Of A bad Ford Coil-On-Plug Ignition Coils

This is no the most definitive list on the subject, however does covering the bulk of symptoms I"ve checked out on this kind of ignition system:

Misfire codes that light increase the check engine light (CEL) on her instrument cluster.Misfire codes: P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308.Engine misfire that DOES no light increase the examine engine irradiate (CEL).Smell that unburned gasoline coming the end of the tailpipe.Rotten egg odor coming the end of the tailpipe. This is because of the unburned petrol from the misfiring cylinder end loading the catalytic converter.Really bad gas mileage.Lack of strength as you accelerate the auto down the road.

What Tools carry out I Need?

A scan tool (automotive diagnostic scanner) isn"t essential to test the COP ignition coils on your Ford car or truck. The tests you"re around to discover are every done there is no one. Now, what if friend don"t know which cylinder is the one misfiring? Don"t you require a scan device to uncover out? well no, girlfriend can discover out i beg your pardon one the is there is no a scan tool. You can perform the cylinder balance test yourself on your Ford auto or truck, check 5 will aid you through this. You"ll need:

An HEI spark tester.Battery jump begin cables.LED light.A helper.You"ll need someone to help you crank the engine if you do the test in the engine compartment.A fix manual.For every little thing remove and replace details you"ll need that is not spanned by this article.

Circuit descriptions Of The C-O-P Ignition Coil Connector

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OK, to test the Coil-On-Plug ignition coils on your Ford auto or truck, you require to understand what each cable (circuit) does in the connector. Right here are the circuit descriptions:


Circuit labeling 2:Power (12 V) Circuit.Circuit labeling 1:Switching Signal Circuit.

You don"t need to know the color of the wires because that this test because the circuit explanation (above) are common by every one of the eight Coil-On-Plug ignition coils on her Ford automobile or truck. So, even if it is you"re experimentation the number 1 cylinder ignition coil or the number 4 cylinder ignition coil (or whichever ignition coil), the above info applies.

To check these circuits, it"s not essential to unplug the ignition coil"s connector. What i recommend you do is to test because that each signal v the connector linked using a wire-piercing probe. This is the easiest and also the most effective means of acquiring at the signals. If you should see what this tool looks like, click here: Wire-Piercing Probe.

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Where to Buy The Ignition Coil and Save

The following links will assist you to compare shop for the ignition coils:


Not sure if the ignition coils over fit your details Ford vehicle? Don"t worry, once you obtain to the site, they"ll make certain they fit and also if lock don"t, they"ll uncover you the right ones.