Here's what happenned:

1.) As always, after a car wash, the glowplug light would not go out. I just waited a while and started the car.

2.) Then, all things were working properly for about a week.

3.) Then, when I turn the key and the glow plug light went on, a couple of times it was accompanied by a rapid ticking noise and a flickering of the tachometer needle. This happenned a few times, then went away on the next start.

4.) I was out of town for four days and returned. I had to move the car out of the garage, and when I went to start it, there was no glow plug light. I tried 3 times, still no light. It started with a few 2-3 second crank sessions.

5.) What's up? I smell my first big bill coming...