i have a 93 grand prix 3.4. my coolant light keeps coming on, though the coolant appears to be ay-okay. someone told me that my o2 sensor could be messed up.
What is an oxygen sensor? what are the symptoms of a bad one, and how do you change it?
a 02 sensor monitors the gas stream before it goes out the exhaust and sends a signal back to the computer so it can adjust the air and gas mixture. the coolant has a sensor too. maybe it,s the coolant sensor.
