After the repair, I noticed when stopped at a stoplight the idle would get low eventually stalling. I took the car back to the Honda dealer that originally had serviced it for the flood damage. The idle problem persisted. I took the car back again, and now they are saying I need to replace the electronic air control valve. Yes, from what you describe, the low idle problem started to occur after the car was flood damaged.
Water has a way of ruining electronic components.
Hurricane Irene hit my area 2-days ago, and my car was flooded, water rose to about the door handles. I have moved the car to dry ground, but it won't start. When I turn the key the starter is engaging but the engine feels like its stuck in the position its in. Change the oil if necessary. If the engine will not crank over as if it is frozen, remove the spark plugs and turn the engine over by hand to remove the water from the cylinders.