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Old 09-16-2012, 10:50 AM   #1
03FocusSPI
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Join Date: Sep 2012
Fan#: 103871
Location: Sidney, OH
What I Drive: 2003 Gray Focus

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2003 SPI Misfire

My daughter's Focus has been having intermittent misfiring at around 45mph when accelerating. Then a couple days ago the MIL started flashing and registered a 0302 and 0316 code. It seems to get worse when accelerating.

I replaced the crankshaft position sensor but the miss is still there. I am going to replace the plugs and wires, but I'm not sure where to go from there if that doesn't fix the problem.

Any thoughts, hints, suggestions would be greatly appreciated!!


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