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Old 01-19-2011, 11:12 PM   #1
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Default Rough Idle, Misfire, and shudder at ~3200-3800 RPM Codes P0183, P0303, P0193

My 2005 5.4 runs rough at idle and shudders hard between 3200-3800 RPM under acceleration. The following codes were pulled at Autozone-P0303, P0193, and P0183.
The P0303 says misfire on cylinder 3. I have replaced the coil, boot and injector and still get the same code. ????
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Old 01-19-2011, 11:55 PM   #2
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Well it sounds like you need to change your spark plugs. Read the sticky at the top of the 04-08 section before you do because the plugs break when extracting them.
2004 F150 XLT 5.4 4x4 3:55-Edge Evolution-Flowmaster 40 series si/do-K and N drop in airfilter-Gotts Mod-Kobalt Toolbox-Auto spring 2 inch leveling kit
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Old 01-20-2011, 02:16 AM   #3
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Change the exact oppisite plug. And since you changed one, might as well change all of them.
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Old 01-20-2011, 02:16 AM

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