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2007 Expy P0308 code

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Old 01-26-2011, 09:25 AM
n2umr n2umr is offline
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2007 Expy P0308 code

I started getting a misfire code, P0308, on my expedition these last few weeks. It only happens under hard acceleration when cold so I am assuming it's a weak coil. Is the number 8 cylinder in the back on the drivers side, just looking for clarification.

Thanks,
Mark
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Old 01-31-2011, 03:15 PM
n2umr n2umr is offline
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Well, changed the coil and no change. I guess the plug is next. Maybe run some good injector cleaner also. Any suggestions?

Mark
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Old 01-31-2011, 03:19 PM
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function12 function12 is offline
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You are doing what I would have done. You can also just move the coil pack to see if the misfire follows it.
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Old 02-05-2011, 10:46 AM
n2umr n2umr is offline
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Changed the plug today and it seems to have fixed the problem. I was really shocked as to how bad the one I took out was worn. If they are all that bad maybe I should change them all and hope I dont break any.

Mark
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