Hey guys, wanted to see if I could get your insight for my engine troubles. I have a MY02 with roughly 82,000 miles on the clock. The check engine light came on yesterday morning giving me the codes of P1399 and P0304 and had a rough idle. I changed out the spark plugs with new ones but the problem was still there.

Now because I was only receiving misfires in cylinder #4 versus the entire engine, I ruled out the crank position sensor already. I moved the coil pack from cylinder #4 to cylinder #3, reset the codes, and now it's giving me P1399 and P0303. Is it safe to assume that the coil pack is bad or should there be other items I should be looking out for?

 

Fuel injector.

 

But likely the coil pack because the code is moving.

I have a few extra coilpacks you can have cheap. PM me.

 

I actually have a spare set of used injectors, too.

 

i agree with above, if it moves, then its most likely the pack

 

Ah shoot, I wish I would have checked the thread before I ordered a new set of coil packs from Majestic Honda...

Thanks for your input, it helped put my mind at ease. I'll follow up in this thread once I get the new packs in.

CKit: I'll PM you about the injectors though, I'd be interested in getting those outta your hands

 

I would move the pack one more time to cylinder one just for peace of mind.

 

Ah I would do that next, but Great News!! Turned out to be the coil pack in question. Had that pack replaced and the engine is running good and strong again. Thank you all again for your support!

I'm rather curious as to why the pack would fail, but I'm still very happy to have my car back in shape.