Smartbox11

Alright guys so Wednesday my car wouldn't start in the morning (last owner had a remote start installed and it was a hack job so doesn't like to start sometimes when its cold) but my girlfriend went to bring me the car during the lunch since the day had warmed up. So the drive from my house to my current job site is maybe 5 miles or so, so it's not a super far drive but she calls me and asks if my check engine light has been flashing recently. I instantly freak out and just tell her to baby it to me and I'll have the codes scanned. Well after scanning I've got codes P0300, P0301, P0302, P0303, P0304, P0305, P0306, and P1399, no I have the Haynes manual for my vehicle and know that every one of my codes is a misfire and such but don't even see P1399 in the book. Now after a small amount of research it's a random misfire code but honestly don't understand how this just came out of nowhere when she drove perfectly fine the entire ride home the night prior. Anyone have any advice on how to fix said situation other then EGR valve replacement, spark plug replacement, and coil pack replacement. Honestly missing driving my car and hate driving the girlfriend's Toyota Camry so any help would be greatly appreciated.

Mason Edmison

That stinks man. I would suggest checking this tutorial out. This guy is really good in general but specifically for testing each element rather than throwing random parts out it based on a hunch. Part 1 -How to Test a Misfire Condition (Honda 2.2L, 2.3L)
There are other links to relevant testing within this article too.

I would at least test the EGR valve. All you should need is a vacuum gauge. Maybe check fuel pressure. Check for vacuum leaks (carb cleaner but do it on a cool engine). I would test the ignition coil as well.

Found this in regards to all cylinders misfiring.... A weak coil or excessive rotor gas inside a distributor would affect all cylinders, not just a single cylinder.
" Low fuel pressure would affect all cylinders rather than an individual cylinder, as would most air leaks. A leaky EGR valve can also have the same effect as an air leak.

holmesnmanny

alot of times so many misfires means the crank sensor is bad, but i would check mechanical timing first