09 lancer won't turn over
 

Ok here's what's going on, my oil sensor broke so I had to replace it. In order to get to it I had to take tge radiator/fans out and had to take the intake manifold out to gain access to it. I replaced it and put it all back together. And now the car won't turn over at all...? I've checked all connections 3 times everyeverything is where is goes. Battery is good and has plenty of cca. I don't get it? I've looked over all fuses even checked the starter and it kicks on when powered. Can anyone help me at all please?