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Check engine Light on AGAIN #8

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Old Jun 25, 2008 | 09:40 PM
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MUSTANGPRESLEY's Avatar
MUSTANGPRESLEY
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Check engine Light on AGAIN #8

Ok here is where im at light came on it read #8 misfire, had the plugs changed still on then changed the cop lgiht went off, it ran great for about 150 miles, now its back on again and its reading number 8 misfire again, what do you think??
 
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Old Jun 25, 2008 | 09:42 PM
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fireball 440
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Can you feel an engine misfire while driving or idleing?
 
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Old Jun 25, 2008 | 09:45 PM
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MUSTANGPRESLEY
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Yes it runs real rough and you can feel the misfire, 4.6 v8, 70k miles, 2001 f150
 
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Old Jun 25, 2008 | 09:48 PM
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fireball 440
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I guess it's possible you could have gotten a faulty COP. :dunno:

You could try switching it with a different cylinder and see if your fault code changes to that cylinder, then you know it's the coil.
 
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