Went out this afternoon to look at it some more and low and behold it started fine as if nothing happened. Temperature rose to about 43 today and its supposed to be warmer then average all week with 70 possible for a high Wednesday, so I'm pretty sure I'll get no reaction the rest of the week.

I too am battling with my wifes 2007 xc70. The same long crank times, occasional tach jump erratically during cranking, slight backfire once in awhile and then nothing.
NO CODES !
swapped crank sensor made no difference,swapped keys no different. The car has fuel pressure, but has no spark while ...