I need to know the location of the main computer for the olds aurora 2001. its suppose to be left front of engine compartment . but there i find the air filter housing and battery. on the other side is a fuse block, Is the computer under this.?

 

Try under the dash

 

ive looked under dash both drivers side and behind glove box

 

I don't know where it's at on your car, but have you tried following the wiring harness from the engine to see where it goes too. It should be inside the car under the dash somewhere in that area.

 

Take a look inside the engine air cleaner/filter.