Question about 2002 Chevrolet Monte Carlo

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Getting bad mileage on my 2002 Monte Carlo LS 3400 SFI 3.4 liter V6 and it is suppose to get 31/22 MPG can you tell me why this may be occurring?

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Www.fueleconomy.gov list the mileage for your vehicle at 29/19. I don't know what kind of mileage you have been getting, so I have nothing ot compare it to. You could be due for a tuneup, air filter and oil change. Scan the computer for trouble codes that may be stored in the computer and clear the codes. Keep your tires aired up to the max recommend pressure on the tire sidewall. All these things will improve fuel mileage. Great performance and mileage increase. Cold weather can affect fuel mileage as the engine runs richer until it warms up. The gas at the service stations has a lot to do with fuel mileage. Especially when they switch over from summer to winter formula. I got a boost in mileage and performance with a set of E3 spark plugs.

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and
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I have a 96 grand prix se 96 3100 Sfi V6 when i start the car it dies on rare occansions and id like to know why / and if it is safe to put fuel injector cleaner in my car to see if it helps the issue


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