How to Ignition Coil Pack Ford 4.6L Replacement | F-150 E-150 Expedition Lincoln Navigator | P0303

How to repalce the ignition coil on a Ford 4.6L engine 1997 - 2010. For code P0303 but will work on P0301 P0302 P0303 P0304 P0305 P0306 P0307 P0308.

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Vehicles Covered in this Video:
2001 Ford E-150
2002 Ford E-150
2003 Ford E-150

2003 Ford F-250

1999 Ford Expedition
2000 Ford Expedition
2001 Ford Expedition
2002 Ford Expedition
2003 Ford Expedition
2004 Ford Expedition

1999 Ford F-150
2000 Ford F-150
2001 Ford F-150
2002 Ford F-150
2003 Ford F-150

1999 Ford F-250

1999 Lincoln Navigator

Should I replace 1 ignition coil or all 8 ignition coils in my F-150?

Generally for this F150, we recommend to replace all 8. You can get away with replacing one however if the other coils are not very old (5 years or newer is our general guideline), but if you are not sure, or you know that they have never been changed, it is best to buy all 8. Besides not having to replace coils randomly, you can save a lot more on the bundle. Many owners experience more than one old ignition coil going bad within a short period of time. If your ignition coils have been replaced recently, you can get away with replacing just one, but this is usually not the case.

Misfire codes are typically:

-P0301 Cylinder 1 misfire detected
-P0302 Cylinder 2 misfire detected
-P0303 Cylinder 3 misfire detected
-P0304 Cylinder 4 misfire detected
-P0305 Cylinder 5 misfire detected
-P0306 Cylinder 6 misfire detected
-P0307 Cylinder 7 misfire detected
-P0308 Cylinder 8 misfire detected
-P0309 Cylinder 9 misfire detected
-P0310 Cylinder 10 misfire detected

P0351 Ignition Ignition Coil A Primary/Secondary Circuit Malfunction (Cylinder #1)
P0352 Ignition Ignition Coil B Primary/Secondary Circuit Malfunction (Cylinder #2)
P0353 Ignition Ignition Coil C Primary/Secondary Circuit Malfunction (Cylinder #3)
P0354 Ignition Ignition Coil D Primary/Secondary Circuit Malfunction (Cylinder #4)
P0355 Ignition Ignition Coil E Primary/Secondary Circuit Malfunction (Cylinder #5)
P0356 Ignition Ignition Coil F Primary/Secondary Circuit Malfunction (Cylinder #6)
P0357 Ignition Ignition Coil G Primary/Secondary Circuit Malfunction (Cylinder #7)
P0358 Ignition Ignition Coil H Primary/Secondary Circuit Malfunction (Cylinder #8)
P0359 Ignition Ignition Coil I Primary/Secondary Circuit Malfunction (Cylinder #9)
P0360 Ignition Ignition Coil J Primary/Secondary Circuit Malfunction (Cylinder #10)

DIY Ignition Coil Testing

This is a free ignition coil testing method that will only work if the coil is 100% dead. Here’s what you need to do - while the engine is running, unplug the connector. If the misfire gets worse, then that coil is good. If there is no change, then the coil is bad. It's imperative that when you carry out this test that only the harness connector is disconnected, and the coil is not removed. If the coil is removed/ separated from the spark plug while connected to the harness, and the engine is running, the high voltage has nowhere to go, except back into the coil and into the vehicle electronics system. This can damage the coil, and even the main vehicle computer. Any coil that is separated from the spark plug while the engine is running must be grounded somewhere.

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