99 Outback misfire P0303, P0304

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tilford97@aol.com - 24 Oct 2006 03:32 GMT

Hi-I've been working on a 99 Subaru Outback. It shows P0303 and P0304
on the code reader. I changed the plugs and wires. The changed the
ignition coil, which I thought would be a fix, but the light came back
on after a couple weeks and it is the same codes. Any ideas? Thanks.
Steve

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dsguy - 25 Oct 2006 02:50 GMT

> Hi-I've been working on a 99 Subaru Outback. It shows P0303 and P0304
> on the code reader. I changed the plugs and wires. The changed the
> ignition coil, which I thought would be a fix, but the light came back
> on after a couple weeks and it is the same codes. Any ideas? Thanks.
> Steve

these particular codes are cylinder misfire codes which could be caused
by any number of things, not just the ignition system. faulty fuel
injectors, o2 sensors, cat converters,valves,tcm's...
i don't have much subaru experience, so i really couldn't tell you what
most commonly goes wrong with these cars, but i hope i've given you an
idea of some of the things that can set these codes

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