the 1st thing that came to my mind was a weak return spring on the bendix, the little gear that drives the flywheel/ring gear. Then as i read Guido's post, yeap a solenoid could be sticking, even the fender mounted type....
I had a 1996 Ford p/u that had a 300 straight six in it that did that.It had a solenoid on the fender well as well as on top of the starter.I replaced everything, just to make sure it was covered.
In a separate subject, anyone know if a 2003 Ford E-350 has a separate solenoid in addition to the one on top of the starter?
This has happened 2 times so far, the van runs fine, no problems, and then I go to start it, and it is as if someone took the batterys out of the van, completely dead.All connections are clean, free of corrosion.If I grab hold of the positive cables going down towards the frame and tug, usually it will come to life.I spent 2 hours at home after Christmas under it and could not find anything loose, corroded, or anything wrong.I am considering replacing every cable on the van.This also only has happened after I have been driving on snow covered highways for a period of time.