It's funny you say that...... Mine will do the same thing. My glow plugs don't work, and that is part of the ignition switch. When it died a couple weeks ago, the lift pump wasn't getting power. So I added a toggle switch with a fuse straight off the battery. Then the ignition did the same thing you said. I am probably going to put a napa ignition switch on it and wire up the glow plugs on a push button with a relay and be done with it. The weird thing is the dang alternator still charges. Haha