How can I tell if my O2 sensor needs to be replaced? I don't believe I am getting the gas mileage that I should be (getting about 300-320 KM on a full tank). How much do these usually run from the dealer? This is for a 94 integra LS with about 170,000 KM. Most people I know are getting like 400+ on a full tank. TIA.

 

have you tried doin basic tune-ups? it could be your fuel filter, air filter, ignition wires, spark plugs, cap and rotor... just to name some things. if your o2 sensor was bad, you would be throwin a CEL or your car would be not be runnin right.

 

I have done everything you just listed for a tune-up and my CEL is not on at this time but I am just wondering cause my gas mileage is about 100-150km less then my friends with tegs.


What do you mean by my car not running right exactly?