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# 3 misfire

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Old Oct 26, 2005 | 05:56 AM
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Question # 3 misfire

i have a 02 expedition 4.6 65,000 miles. i changed the plug and the coil my obdII still reades p0303.i dont no what else to do.also is # 3 on passenger side need to be sure. i also switched back to motorcraft plugs.my code reader has that code p0303 and pending, i guess thje next cycle.
 

Last edited by donnj; Oct 26, 2005 at 06:06 AM. Reason: forgot
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Old Oct 26, 2005 | 06:07 AM
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Old Oct 26, 2005 | 07:06 AM
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Originally Posted by donnj
i have a 02 expedition 4.6 65,000 miles. i changed the plug and the coil my obdII still reades p0303.i dont no what else to do.also is # 3 on passenger side need to be sure. i also switched back to motorcraft plugs.my code reader has that code p0303 and pending, i guess thje next cycle.
Yes the #3 cylinder is on the passenger side (right bank). Ususally I would think a bad coil would cause this problem but it sounds like you have already swapped it out. You could try switching the coils on the #3 and #4 cylinders and see if it will start the miss on #4 instead. That would tell you that the #3 coil (the one that you moved over to #4) is bad. Good luck!

Shane
 
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Old Oct 26, 2005 | 07:11 AM
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# 3 misfire i swaped 4 with 3 still misfire # 3 is the order for plugs for a 4.6 passenger side from window to radiator.1,2,3,4.
 

Last edited by donnj; Oct 26, 2005 at 07:18 AM.
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Old Oct 26, 2005 | 07:20 AM
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Nope, #1-4 is from the front of the engine to the back.

Shane
 
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Old Oct 26, 2005 | 09:04 AM
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Windshield
4---8
3---7
2---6
1---5
radiator
 
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