I am new to this forum site and was recomended by a friend!
My problem is that- I have a 1999 mercedes vito 108cdi van which started to give me problem when i tried to start on frozen mornings, I checked the glow plugs buy unplugging from the relay putting a meter from the the connector plug and a good earth/ I found no.1 and no.2 to be O/S and no.3 + no.4 to have a reading of between 3.6 and 3.9 Ohms. So ok i need new glow plugs on 1 and 2, I also checked the relays outputs by connecting the meter to each individually. turn the ignition on and get a reading of 12.98V for 25sec. ok the relay is doing its job so how is it that my battery goes flat over night when i plug the glow plugs into the relay and only when i plug them in.With no ignition on what is drawing current? would appreciate any advise thanks