Hi everyone,
I just bought a used 09kk sport back in October of last year. Ever sence I got it the check engine light keeps comming on for the same reason. The codes are for the 3rd, 5th, and multiple cylinder misfire. I've changed the spark plugs twice and the fuel injectors once, yet it continues to not be come up. I'm on the wall with this one. The only other thing I can think of doing is the wires going to the plugs, but even with doing that I'm still not sure it'll fix the problem. I'm new to this site and only 16 but I do know a lot about jeeps(specifically mine)and do all my own work but any advice would be helpful. Thank you

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-Joe
1990 ford f150 4x4, standard cab, long bed, 5.0 v8, stick shift, cherry bomb glasspack, f250 rear springs
2010 ford escape limited awd, weather tech floor mats, rest is stock

may be a little late...but you can try swapping the coil packs around (had a similar problem on an 04 Lincoln LS). For example, if cylinder 3 keeps throwing a misfire code, but cylinder 2 is fine, swap the coil packs on cylinders 2 & 3. If it starts throwing codes for a misfire on cylinder 2, you know the coil pack needs replaced. This is just a thought...hard to believe that 3 different coil packs would all go bad at the same time...

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2008 KK Sport 4x2 Sandstone
245/70R16 Hankook DynaPro ATM, blacked out headlights, blacked out grille, blacked out stock rims

It actually hasn't been going off at all the past couple months but if it happens again I'll try your idea thanks for the advice.

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-Joe
1990 ford f150 4x4, standard cab, long bed, 5.0 v8, stick shift, cherry bomb glasspack, f250 rear springs
2010 ford escape limited awd, weather tech floor mats, rest is stock