Can someone please help

[mcspider]

Hello could someone please help me identify these two parts the one id close to the injectors and has a number on it that looks like SBZ0052972 and the other is over by the battery box I ask because the one by the injectors seems to be making a noise like its shorting out yet the garage has not mentioned it and the other by the battery they are changing tomorrow to cure a tapping sound many thanks Mark 65586559

[dissy1810]

the first one is the air idle control valve mine makes a high pitched squealing sound for about a minute after the ignition is turned off i think this is normal the second one is something to do with the emissions i think and that makes a loud tapping noise which i think is normal i hope this helps

[mcspider]

Thanks any help was much appreciated the first one on mine sounds just like its shorting out when its running and they have not mentioned it