Where can I find the oxygen sensor on my 2001 Ford Escort?

P0320 is the code; car will not start now; turns over but does not start

Your p0320 code looks like coming back on no power to your igition coil. Does motor seem to turn over any faster than it normally does- if so your timing belt may have broken (hope not cuz could have caused more damage). If sounds like normal turn over could be problem with either camshaft or crankshaft position sensors. Luckily both these parts fairly inexpensive at your local autoparts store and not difficult to replace. I'd start with cam sensor first and then crank.

Replaced the camshaft sensor, coil pack and checked the fuel to fuel rail, checked timing belt and pulled plug and checked for spark; Getting spark-can it still be crankshaft sensor?