So my ac compressor locked up the other day, so we took it off, it started with out the belt. I went and got a belt tensioner from a non ac truck with a smaller belt, and now it won't start. Does anyone now why it won't start?

 

Battery dead

 

its a new battery, and it turns over just won't start. So it's not the battery and just checked all the relays and fuel pump and everything is cycling.