I have a 2001 XL-7 2wd with 51,000 miles that has developed a hot start problem.  First thing in the morning it starts fine.  Let it warm up and sit, and all it does is crank.  Plugs, fuel filter and pcv valve have been changed.  I did have to pull the injecters from the fuel rail as 2 were clogged.  Had them professionally cleaned and they seem to be working fine (I'm assuming).  Could it be the crankshaft position sensor causing this?  Where is the CPS on the XL-7?.  Any other ideas would be greatly appreciated.

Mike