When I first got the car (last Nov) the glow plug light would flash after I started the car. I replaced all the plugs and the problem was solved. My new problem is that (1) The glow plug light will come on (and stay on) after about 5-10 min of driving. (2) The glow plug light also will stay on (for as long as I have the key to the #2 position) while I am getting ready to start the car. If I turn the key off and then back to #2 position, the light will sometimes work correctly (stay on for 10 sec or so) or will be "stuck" in the glow mode until either I decide to start the engine or try to get the light to work correctly by going over the start procedure again.

Once the car has started....the light stays off and will then come on (and stay on) after I have already been driving for 5-10 min. What do you guys think is causing this? Relay???? Also, will I "cook" the glow plugs if the light stays on too long while I am driving. This just started a couple of days ago.

The car:

1980 240D with pencil type plugs

thanks,
mike