It idled for about ten minutes and I took it for a drive seemed to do ok, just lacking a little power. Let it cool down for a few minutes and now it won't start.

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We replaced the FICM about a year ago. Hope its not that again!

 

If the replacement is from the dealer it very well could be... I'd test it out again it's free and takes 5 mins to eliminate that as a problem...

 

If you have to let it cool down to start then its sounding like a high presure ol leak, either dummy plugs and stand pipes or/and/ the stc fitting onHPOP.

 

How do you check one?

 

http://www.bscustoms.net/diesel/FICM.pdf
Here is a link to test FICM.

 

Need to get it on a scanner and check your icp vs icp desired...

What oil were you running? what oil are you running now?

 

I am using Rotella 15 40. It is all I ever use. I will check the icp now.

 

I had a problem a while back with my truck that would cause it to hard start or no start, and turns out it was the Banks system. For some reason every time I had it plugged in the truck acted like a fool. Have had the Banks off the truck for a little over a year now and no issues have resurfaced. Just my two cents.

 

As a trouble shooting measure, I'd remove the Banks as well. If nothing else, it would rule out the Banks. Removing means exactly that, not just setting it to stock.

 

I've learned my lesson, not to blame Ford for problems. Blame what you put on the Ford for your problems. I took the Banks 6 gun off and problems seemed to have disappeared. Starts and runs great! I would like to thank everyone who gave me ideas and things to try. I really appreciate it!