This morning for the second time in a week the engine just dies. The first time was as I pulled in for fuel and then this morning as I came to a stop for a traffic light. When this happens the engine will crank but no ignition. When I turn the key on the glow plug light does not light. the first time with the key turned on I noticed that the glow plug light came on after 3 or 4 minutes and then it started and ran with no problems until this morning. After pushing the car to the side of the road this morning I left the key turned on and Just as I was about to call a tow truck the glow plug light came on and it started right up. I ran a few service calls and everything was fine. Both times were the first thing in the morning and temp outside was in the lower to mid 30's and it happened after about a mile from the house. I am leaning toward the FSD since I haven't had to replace it for probably 2 or 3 years. Any suggestions would be greatly appreciated.

Phil