Originally Posted by sbourg

I would pull the electrical connectors off the EHA, and then the O2 sensor, and see what happens. If neither drops the idle, then check for air leaks on your own. see if the air hoses are soft and pliable when you pinch the gently. If they seem hard and don't give, then you probably have air leaks at all the interconnects, where they will fit loosely. Replace any such hoses.

Steve