Problem solved.

ECU Error code..
ECU #6 - 6 blinks (Thermostat error)
A/T #10 - 1 long blinks (Thermostat error)

Broken thermostat was sending Cold engine signal
to ECU idleing and rpm would drop..

F22A engine has total of three thermostat..
One I had problem was located at engine block..
Paid $25 for used 97 Accord Thermostate.