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Constant Missfire
I have an 06 xlt with a 5.4. I keep getting p0303, p0012, and p0021 codes. I've changed both cam sensors, both vcts, plugs, coils, injector on number 3, and both o2 sensors on bank 1. It idles fine and no diesel noise. Has a light misfire at idle and then dies when you put it in drive or...- lincman29
- Thread
- Replies: 12
- Forum: Engine & Performance
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L
Missfire
I have an 06 xlt with a 5.4. I keep getting p0303, p0012, and p0021 codes. I've changed both cam sensors, both vcts, plugs, coils, injector on number 3, and both o2 sensors on bank 1. It idles fine and no diesel noise. Has a light misfire at idle and then dies when you put it in drive or...- lincman29
- Thread
- Replies: 1
- Forum: 2nd Gen - 2003 - 2006
