I had this problem long ago with my car, try few things by yourself

1) Check and replace if necessary your spark plugs.
2) Check clean/replace your air filter.
3) Feed a full bottle of fuel injector cleaner while refueling.
4) check for current leakage around distributor due to any crack etc. on the cap or any floating wire.

See if there is any change.

 

Have you had the ignition switch replaced under the recall that Honda issued a while back? Your symptoms match it 100%.

 

I'm not sure about the Accords, but on my other car a few years back, I had basically the same thing happen and it turned out to be the computer. Let us know when you get it fixed and what was causing the problem as many of us on the board have a 6th gen.

 

possibilites ...

1. egr valve
2. ignition switch / coil
3. ecu

I couldn't say which one is correct, because they'd all do the same thing.

the ignition switch / coil should be free.
cleaning a throttle body isn't difficult
I pray to god it isn't the ECU.

 

i hope it's not computer, I have the sparks replaced recently. Throttle body cleaned not long ago. Cat converter was replaced. Air filter replaced a while ago. i'm taking it in for the recall today. i notice now the car has less and less power when i'm pressing on the gas pedal.
And maybe get my EGR valve checked, should i buy honda genuine part for EGR, or trust genetic brand as well? i think it ought to be fun to do this replacement myself.

 

Did the sparkplug wires get connected back properly?

The wires have to be returned to a specific spot, their firing order.

 

yeah, i think the order is right. how does ignition switch cause the car to have these problems? shouldn't it relate to car starting problem only, but not when it's moving?

 

Could be the starter? My car stalled out on me once at around 50 mph. I was getting a flashing "D" and all; but it wound up being the starter stuck (melted) into its run mode.

 

The ignition switch can tell when a key is in place. When the key is in place, the electrical circuits are connected to the battery.

If you have a busted switch, the ingnition might think the key is out of the socket ... when it actually isn't. This will cause electrical failure, as if someone were to pull the plug on your car instantly. (Loose alternator cables do the same thing)

If you hear your car slowly knocking and rolling over to a stall, I'm still leaning towards the EGR.

 

i'm getting my mechanics to check out the EGR valve tmr, i bought a bottle of injecter cleaner, I was hoping it would do some magic haha