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Hey, I am getting around 14mpg city driving with my 2002 4X4 V6 auto Dakota. I have no check engine light on. Recently my transmission modules fried and the dealer replaced them so the truck runs great. I don't drive excessively aggressive and rarely go offroad. The truck has 45K miles and I am wondering if perhaps an O2 sensor malfunction is causing this less than par mileage.
yea the 02 sensors are common to become crap and not throw a code.. i dont know why, you could go under there and pop them off, clean them with electrical contact cleaner, temporary fix versus the correct new ones which aren't cheap.. have fun