I have a '00 Elantra GLS 2.0 4cyl AT ABS that will not start... period. It will crank and crank till the battery dies, but, will not turn over. I recently took a trip from California to Colorado (just returned a week ago), and the check engine light came on (again) as I pulled off the highway to get gas in Gallup, NM during a snow storm. I had absolutely no loss in power or performance and attributed it to a faulty o2 sensor that I had the same problem with a few months before. I continued to CO and had no further trouble except for the check engine light. I had the codes read when I arrived and it was in fact the same sensor as before. I replaced it prior to making the trip home. The trip home was fairly uneventful, with the exception of a tank filling issue, which I also resolved by bouncing the back bumper to "burp" the tank. Once I arrived home, I shut the car off, let it sit for about 30 minutes and then moved the car to a different parking spot. It started just fine to do this. Once I parked it overnight and went out to start it the next morning... nothing. I disconnected the fuel line into the filter to check if there was fuel pumping to the filter... nothing. I have ordered a new fuel pump and am waiting for it to arrive, but, I'm wondering if there are any other things I should be checking for possible replacement as well. I just replaced the MAF sensor and the CKP sensor about 6 months ago, as well as the filter about 4 months ago. Any help would be greatly appreciated!