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Old 01-17-2016, 08:06 PM   #1
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So I just changed the plugs in my 04 and now the check engine light blinks39times, which is misfire I believe and runs like poo. I had to unplug a few things to get to them so should I unplug battery and reset car before going through each one again
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Old 01-20-2016, 11:36 PM   #2
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COP issue? Did you replace or rebuild the COPs? Maybe taking them off when doing plugs caused and issue or damaged one?

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Old 01-20-2016, 11:54 PM   #3
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I'd check the wires first. You'd be amazed at how easily they get damaged now compared to the ones we had growing up.
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Old 01-21-2016, 07:20 PM   #4
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Also be sure they are routed correctly. I recently made that mistake and my fox was misfiring horribly.

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Old 01-25-2016, 12:18 PM   #5
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Wrong section... Will move later...

Anyway if you did it right a plug change wont throw codes unless something broke.

Did you rebuild the cops?

Did you triple check everything you unhooked or removed is back in place?

Did you check the plug gap before installing?

Did you properly torque the plugs to 12-15ft lbs with anti seize?

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