I cant get this thing running right.I have idle surge and lack of power and missing alot of torque.I have replaced the cap/rotor, plugs, wires, coil,EGR valve and sensor,IAC,and both o2's.I have no KOEO codes but I do have code 94 KOER which shows air diverter solenoid circuit fault.Where can i get one? I cant find it online. Do I need to go to a dealer? Could this be causing my idle surge and power loss?