deepwaterdriller

First post but, a long time lurker


Here is my problem 2010 F150 110000 miles no issues at all until


about 6 weeks ago I crank my truck but all it does is turn over, my first thought was fuel pump, towed it to local shop, checked fuel pressure and it did not register any, changed out fuel pump and truck ran fine for about 2 weeks then same issue, cranks but not starting, well after reading a few post on here I changed out the fuel pump relay under bed of truck... again, truck ran fine but, now the same problem...


turns over fine but does not start, it is frustrating because it happens intermittently and shows no faults when I plug it up. it may go a week with no issues then all of a sudden it does not start but after several attempts it starts like nothing ever happened...


any suggestions other than getting a match and gas to it?

F150Torqued

Flakey, intermittent Crankshaft Position Sensor or its circuit wiring? The PCM can't establish ignition timing or valve timing retard, RPM or a bunch of other stuff without it. Though I would have thought it would set a code.


-------------edit


Although searching MERGED: DTC List on www.F150Online.com site forum, the only DTC's that come up searching for "Crankshaft" and "CPS" are:


P0016 Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor A
P0018 Crankshaft Position - Camshaft Position Correlation - Bank 2 Sensor A


P0315 Crankshaft Position System Variation Not Learned.

deepwaterdriller

Well, I couldn't fix the truck so............ I replaced it

techrep

iTrader: (1)

Hell yeah...

F150Torqued

Replace EVERYTHING connected to the Radiator Cap! Embarrassing but I have to admit, that's one solution that completely escaped me. Congrats' on the FIX.