2012 Crank, No Start - Fuse 27 is not the issue

[BenBB]

Appreciate it. Wondering if there would be one for the crank sensor as @B E N suggested, seems like if the problem was fuel or ignition related the PCM should know (inclusive of both of those sensors)...maybe not.

 

[Bradley J Zefkeles]

I have had the no start issue. I had the fuse relocate kit professionally installed. Then it happened again. After looking over the more usual suspects and finding no issued I came to a strange finding. I normally park my Raptor on our very steep driveway pointing nose down. If I have less than 1/4 tank of gas....it pulls the no start thing. To test this I ran it down to just a hair under a quarter tank and parked down hill. No start. Twice. Next I poured in 5 gal of gas. The truck started. Now I just keep it close to full and all is well.

 

[TannerK17]

Reviving this one. Sunday afternoon, drove the truck to run an errand and came out to remote start it in the parking lot, started stumbled and died. Tried the key, same thing for several hours on and off. $136 tow home later, replaced Fuse 27 even though the fuse and block were clean (relocation has not been done), cleaned my MAF sensor and disconnected the battery for 20 minutes. Fired right up, ran better than it did before. Drove a 630 mile trip on Monday, no problem Tuesday/Wednesday, go to start it this morning and now it’s long cranking and won’t start. I have the battery disconnected at the moment.

Truck is at 95K miles now. Anyone have a good starting place before I start throwing parts at it? No check engine light at the moment either. I’ll pull the box to check the connections underneath at #27 and then replace #8 tonight and then move from there I suppose.