Horrible Gas Mileage!!

[peterbrown77]

14 mpg is pretty bad, but in the winter I get about 15. Without MTBE, I get 17mpg. Mostly highway driving too, and I go easy.

Your mileage may not be that bad, Black. I can easily squeeze in 3 more gallons at a fill-up from where the nozzle shuts off automatically, so perhaps you really didn't use as much as you think. 17.5 gals instead of 18.5 would bring you to 14.5 mpg - not great, but not out of the ballpark either.

DON'T BELIEVE YOUR TRIP COMPUTER!

You need to keep track over several tanksful and average it. Go to the same station and use the same pump, if you can, and either fill it to the brim or let it auto-shut-off, but be consistent.

Unfortunately, if you're like me, you're not at the point where you would actually save any money by spending $$$ ( $75 each!) on new O2's if you don't need them. Squeezing 3 more MPG (17 to 20mpg if I'm lucky) for a $300 would take 2000 gallons, or 40,000 miles to amortize.

 

[TheVarmit]

I bought one of those Tornados to install in my 2001 X's intake tube(?). Before the install I was getting 15-16 mpg in town, 20-21 interstate. (Now I realize this mpg is pretty good). After the istall I was getting 13-14 in town, 15-16 interstate. This was the WORST investment I have ever made. Also, by the time I had burned enough tanks of gas to see no improvement, my total refund time limit had expired so I'm stuck with this little round silver piece of expensive tin.

 

[Runesai]

I'd hate to say it, but this is a perfect example of why the search function is worth it's weight in gold in this forum. Those little intake hairballs have been discussed a few times and I don't think anyone has liked them.

 

[davidmmm69]

I Have an 01' XLT with the SOHC 4.0 Motor with 51,000 miles on it, plain and simple i get HORRIBLE GAS MILEAGE!! i just filled it up 18.5 galllons at 2.85 a gallon and it only got me 254 miles which equals 13.72 MPG!! That Sucks!! QUOTE]


be thankful you get that much,,,

 

[Papa]

Don't just throw parts at it and hope you guessed the right one. There is enough information on this site, do a search on O2 sensors, to know if your $85 X 4 O2 sensor is good or bad even if you have to purchase a scanner to get there. Like Aldive said they do not fail very often.