97 Sable 3.0 D.O.H.C has problems starting every so often, car just cranks
and cranks, replace crankshaft position sensor and it fires right up. this
car has had 3 sensors ( all Ford) in the last 2 years with the last one
being just 2 months ago. On sunday it wouldnt start but a shot of quick
start and it fired right up. Any thought to this problem? Lots of fuel
preasure at test valve on fuel rail.