We need to find out if your Oldsmobile is in proper fuel control as part of
the high HC diagnosis. This includes ensuring the oxygen sensor is working
properly, your vehicle's emissions computer is receiving the signals from
the oxygen sensor, the computer is computing the data properly and sending
the correct signals to the fuel injectors to either increase or decrease
fuel delivery to the combustion chambers. The problem may be more
complicated then simply changing emissions components.
posted by SmogTips Support