Starts after sitting??

[Mechanic1215]

I am working on a 1999 F350 and having problems. Havent dealt too much with these engines. The truck starts and runs all day long. You shut if off and try to start it and nothing happens. You let it sit for about 20 minutes and it fires right up and runs all day. It keeps doing it everytime you shut off. I looked through fourms already posted and couldnt find anything on this problem. Any ideas?

thanks for the help

[ancho]

Does it crank but not fire, at the times it fails to start? Or is there no cranking at all?

[Mechanic1215]

There is no cranking, the starter doesn't even click like it would if it had a dead spot or something.

[ancho]

Sounds like heat soaked starter solenoid maybe? Rest of electrical system working ok?

[Mechanic1215]

Yeah it seems to be. And I just got in this morning fired it up, shut it down, and it fired right up. So at least now I know its only when its hot.

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[schnet1]

I would have to go with the solenoid.

[Mechanic1215]

Replaced starter and still having same problem.

[Mechanic1215]

It was the starter solenoid. It's started when cool but not when hot. When hot the solenoid wouldn't transfer the power. So I jumped it and it started right up. Replaced the solenoid and problem seems to be fixed so far.

[ancho]

I'll send you the bill in the mail.

Congrats on getting it fixed.