Dodge Dakota Question

From : leon taylor

Q: 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 . .

Replies:

From : denny

does anyone have a clue as to what is causing the severe drop in fuel mileage on this truck sure i have a clue.... something is causing it to use too much gas... now you can open the hood and set your computer in there so we all can take a look or you can take it to a local mechanic to check out. or you can look at aarcudas last line in his post .....something about a shorted oxygen sensor.. denny drive with a light foot on the pedal and have changed nothing to decrease fuel mileage as far as tires or adding extra weight. i did take a trip from ar to neb . with a loaded trailer in tow and got 13mpg loaded and 17mpg empty trailer i thought i may have gased on it to hard and ruined the injectors somehow putting all that stress on them because the trailer loaded weighed around 1700 lbs . just guessing . this 10 mpg is taking its toll on my pocketbook . any help on ths matter would be most helpful ! thanks !! .

From : beryl

leon taylor wrote does anyone have a clue as to what is causing the severe drop in fuel mileage on this truck i drive with a light foot on the pedal and have changed nothing to decrease fuel mileage as far as tires or adding extra weight. i did take a trip from ar to neb . with a loaded trailer in tow and got 13mpg loaded and 17mpg empty trailer i thought i may have gased on it to hard and ruined the injectors somehow putting all that stress on them because the trailer loaded weighed around 1700 lbs . just guessing . this 10 mpg is taking its toll on my pocketbook . any help on ths matter would be most helpful ! thanks !! pay for gas with your discover card. youll get 5% cash back in the end a $.20 per gallon savings. works on dodge rams too. .

From : leon taylor

does anyone have a clue as to what is causing the severe drop in fuel mileage on this truck i drive with a light foot on the pedal and have changed nothing to decrease fuel mileage as far as tires or adding extra weight. i did take a trip from ar to neb . with a loaded trailer in tow and got 13mpg loaded and 17mpg empty trailer i thought i may have gased on it to hard and ruined the injectors somehow putting all that stress on them because the trailer loaded weighed around 1700 lbs . just guessing . this 10 mpg is taking its toll on my pocketbook . any help on ths matter would be most helpful ! thanks !! .

From : aarcuda69062

leontaylor@webtv.net leon taylor wrote 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 . it means the pcm thinks the left bank of the engine is running lean. i was told it means the 1st oxygen sensor is that correct not always. 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 . consistent with a shorted oxygen sensor. .