Diesel Problem

[SC74]

I have a 2002 7.3 F350.

Mine started doing that one winter. I thought the same thing,
glow plugs. Then after a week or so it started shutting off going down the road and was hard to restart.
Turns out it was the Cam position sensor going bad. Ford had a recall on the sensors.
I replaced it and I have not had any trouble since. It was $30 and took 15 minutes to change out.
Since there are known issues with these sensors it might be a good place to start.

I've been through half a dozen cam shaft position sensors in my 02 7.3L. In fact, I keep one in the glove box now for spare when I need it. Mine has never had those symptoms though .. mine always would shut off while driving or start stuttering and eventually would just not start at all.