My 2003 Accord is experiencing a throttle surge problem similar to what I have read about in this ng. 6 cyl. No other apparent problems. 120K on plugs. 27mpg.
It warms up OK. Then it begins surging between 1000rpms to 2000rpms. Up and down continuously surging. It happens when it's sitting still or when being driven. Cruise on or off doesn't make a difference. Using an Actron code reader I get a "pending" P0505 (Idle Control System Malfunction) which seems reasonable. I don't know where to start to address this problem. Any advice would be greatly appreciated.
Penthor