200D's had a resistance coil mounted on a ceramic block in the glow plug circuit. Mounted on the firewall, I think. Not sure if 220D is the same or not.

__________________
Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



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