The codes read p0300, p0304, p306, p0305, p0400. I've run the codes several times after resetting. It consistently comes up with p0300, p0304, p0306, p0305. I have replaced all of the spark plugs and wires. The MAF has been replaced, as well as the air filter. I can't wrap my head around whats going on. It idles beautifully and revs the engine (in neutral or parked) perfectly. That being said, When I put it in drive, it will go fine for a short time (until I get to 20 mph). You can tell the entire engine shakes along with the misfire engine light flash while going 15-20 mph. My rpms won't go over 2000-2100. By the time i get back, the engine is barley running. Wont go above 5 mph
2007 civic ex 130,000 3rd motor because 2nd motor had this problem also