my dodge van 3.9 2002 is getting spark,getting fuel,but wont start.

yes there are some codes,p132,p135,p420,and p455.i googled them,said first 2 wer o2 sensors,and the other 2 wer catalatic converter.i didn't think that they wouldn't make it start.someone told me to change crank sensor,any feed back would be great..thanks.

could be plugged exhaust maybe?

I just don't understand it,it was runnin like a top when I parked it.would that make it not start,i mean I cranks and cranks,really don't even wanna start.

if exh is plugged solid it will not start.try removing 2 frt 02 sensors and see if it starts then,that will tell you

ok,thanks.just trying to fix problem without spending a whole lot of money...thanks again

is fuel pressure good? should be 50lbs

I thought of that too,but wouldn't it start if I spray carb cleaner in it?it should at least start and burn what little bit I spray in it,rite?havent checked the fuel pressure tho.