Question about 2000 Dodge Dakota Quad Cab

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Horrible gas mileage

I have a 2000 Dakota Quad Cab with a 3.9 V6 with 97K miles. I replaced the standard air filter with a K&N filter and since then my mileage has dropped to about 10 mpg. I have replaced the O2 sensors (front one was BAD!!), spark plugs and wires and just put a cheap Fram filter back in. Any other ideas? It almost feels like an injector is plugged but so far no fuel treatment has helped. I use Lucas when I add anything to the fuel or oil.

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What are your driving habits like? If you start fast and stop quick this will take at least 10mpg off
Get a vacuum guage and mount it on the dash and run it to a strong vacuum source on the engine, hopefully you have around 19-21" at idle and then drive and try to keep the vacuum reading as high as you possibly can this means very light foot on the throttle and on the brakes, easy steady acceleration and no speeding I have seen thousands of people complain of fuel milage and after seeing their driving habits they are the problem not the car. Im not saying you drive hard but just in case change it and you will see with a vacuum guage and tru to keep that needle up around 17-20" all the time your fuel mileage will improve dramatically.

Posted on Sep 21, 2008

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