2005 Ford Expedition 5.4l - Half the coil packs don't work

[NikM755]

Coil Packs 6, 7, 8 aren't working. Does anyone know the fuse location? and Does anyone have any other suggestions? Thanks in advance.

 

[Hamfisted]

Get a NOID light and test for ignition signal at the coil's harness plug. Are these known good coils ?

 

[Johnathan M]

If you move those coils to other cylinders, do they still not work?

 

[Johnathan M]

Swap coils 5 and 6 and see if coil 6 still doesn't work. If you swap those 2, and then coil 5 isn't working but 6 is, then that confirms that it's a bad coil.

 

[GaryH]

I had 3 coils go bad by 90K on my 03 Expedition. Just curious, how do you know it's coils 6, 7, and 8? Did they all stop working at the same time?

 

[HydroAcft]

Had a similar problem with 3 and 8 turns out release clips for the coils were broken just replaced the connector and all worked great