What are symptoms to a bad oxygen sensor for a fire bird?

Answer:
If you are not getting an error light, you can check the color and oder of the exhaust. Dark exhaust means the car is running "rich" and that can be due to the 02 sensor telling the computer there is not enough fuel.

Bad O2 sensors will cause loss of power and fuel economy.
First answer by Seantrotter. Last edit by Seantrotter. Contributor trust: 9 [recommend contributor recommended]. Question popularity: 1 [recommend question].