Need help

I have a 99 neon. The girlfriend was driving it and accidentally went from third to second gear instead of fourth. It died on her and now the fun has begun. First the tachometer is pinned all the way over now and i cant get it to do codes with the on off key switch thing. It cranks fine but wont start. I have changed the ecu to the mopar one i changed the plugs the coil the camshaft sensor the crankshaft sensor. I believe i am getting no spark to the coil since i took a voltmeter and went between the two prongs.

What else could i try? would the timing belt do all that if it slipped?. I'm confused as hell.Please help.