taking apart an EGR valve for cleaning for 1.6HDi/TDCi (Peugeot, Citroen, etc.) - YouTube
EGR valve for CITROËN C5 I Hatchback 2.0 HDi (80 KW / 109 PS) Diesel
Amazon.com: Idle Air Control Valve IACV for 1998 1999 2000 2001 2002 Honda Accord 2.3L EX LX SE 36460PAAL21 AC271 AC4072 50524 IAC Valve with Gasket Idle Control Valve : Automotive