Just an insight into the procedure of cleaning the idle air control valve more commonly referred to as the IAC valve. Some of the items you may need to replace if cleaning the valve is successful so my shopping list for this job is as follows:   x1 16176P8AA01 GASKET, THROTTLE BODY (NIPPON LEAKLESS) x1 16177P8AA01 GASKET B, THROTTLE BODY x1 16456P8AA01 GASKET, ROTARY AIR CONTROL VALVE x2 938920502508 SCREW-WASHER, 5X25   The pictures are pretty self explanator