Where is the air filter located on a 1986 Chevrolet celebrity station wagon?

The location of the air filter varies with which engine your car has.

If it is the 2.5L 4 cylinder engine the air filter is over the the throttle body.

If your car has the 2.8L V6 with a carburetor the air filter is over the carburetor.

If your car has the 2.8L V6 with fuel injection the air filter is in a canister mounted to the inner fender well on the passenger side.