Hi,
My Disco has developed a strange glow plug problem. I will add that it is starting OK without them but? I have just uprated the battery to a 644, but wouldn't have thought this was the cause.
When you turn the key, glowplug light comes on, then goes out, within 1-2 secs. However, if you start the engine let it run for a minute, turn it off then test them again they stay on as normal.
I haven't as yet done any diags on the system, but am I right in assuming that there is faulty plug or relay. It would help if someone as had this before, so I could go straight to the problem.
Help, very much appreciated.
Tim
'96 Disco 300 Tdi