I did a code test on my 97 Dakota P/U that has a 3.9 and it says lean burn on the left bank . Im not sure exactly what that means . I was "told" it means the 1st Oxygen sensor , is that correct? The problem is the fuel mileage has went from 19 hwy to 10 hwy . I replaced the plugs and wires but no cure . Raw gas in the form of black smoke is coming from the exhaust pipe . Thanks .
- posted
15 years ago