So my car Honda Accord 2002 V6 has had this problem for awhile, every time it's usually the coils or the spark plugs and I've fixed it up until now; I'm out of options. Basically the car runs at 2.25rpms going 70mph, and when it brakes, it dips below the .75 rpm mark when I come to a full stop. It feels like I'm carrying a massive amount of weight and the car just can go any faster. Any ideas what the issue could be this time?