I am wondering if I don't hook up my O2 sensor what will happen, will the motor still run fine just curious.
1984 elky 305

it should run alright, the computer will not acheive what they call closed loop operation. it may affect milage and emissions but the vehicle should run ok. the best way to find out is to disconnect the o2 and see how it runs, if you dont like it reconnect

It will run full rich and the timing will retard. Higher emissions, lower MPG and lower performance. The torque converter clutch won't engage either (shorter trans life).

In addition to the above, you'll probably have the check engine light on all the time which would drive me crazy.