My 2.2 vectra is dificult to start. The cold start light does not come on so I thought it was the control unit next to the battery. I changed that but no joy. There is no current to the glow plugs when I turn on ign. Is there another control unit which sends info to the main control unit.

Dave Tadley, June 2009

Could well be the glow plug relay or the glow plugs themselves. If not, its probably corroded wires on the ecu terminal

Craig Smith, June 2009