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-   -   Poor Gas Mileage (http://www.fordrangerforum.com/3-0-vulcan-tech/25556-poor-gas-mileage.html)

Bobver 01-31-2011 11:13 AM

Poor Gas Mileage
 
I purchased my 2000 XLT about 10 years ago with approx 12K miles on it. It now has approx 61k miles. Up until about a year ago the gas mileage was as expected for a truck; i.e. 16-18 city and 19-22 hwy. However, over the past year it seems to have gotten increasingly worst with city driving dropping to 10-12 MPG. The engine runs and idles fine with no noticeable loss of power. Any suggestions are greatly appreciated.

90fordranger 01-31-2011 11:29 AM

Re: Poor Gas Mileage
 
maybe, some sort of hole around your cat? I know when i had a hole between my cat and mufflar i lost a lot of power, and got worse mpg.
if there is a hole, you can simply go to autozone and get some mufflar tape, And cover the hole.

Bobver 01-31-2011 11:46 AM

Re: Poor Gas Mileage
 
Thanks 90fordranger. Although I don't notice any appreciable loss of power, I will look for that.

korins 02-02-2011 11:12 PM

Re: Poor Gas Mileage
 
What kind of plugs are you running? I've heard questionable spark plugs can suddenly lead to a dramatic mpg reduction...

wrench01 02-03-2011 01:05 PM

Re: Poor Gas Mileage
 
I have had the same thing happen to me and looking for a solution. I will also look for the hole near the CAT. Will let you know.

merlin215 02-03-2011 01:18 PM

Re: Poor Gas Mileage
 
FTYI

I have a 2010 and in the city , well it just drinks gas . 4.0 engine . On the highway every day I can get around 300 miles , give or take in perfect weather . But in the city it is bad .. Less than 250 miles per tank sometimes , stop & go etc .

Good thing : 18 gallons

Half as much as my Ram1500 was ( 26 gallons ) And I would get about the same per tank for more ....

joker515 02-03-2011 11:26 PM

Re: Poor Gas Mileage
 
when is the last time you did a tune up?

Bobver 02-04-2011 08:14 AM

Re: Poor Gas Mileage
 
Good point about the tune-up. I've had the truck about 10 years and have never thought about a tune-up because it seem to be running so well. I'll give the tune-up a try. Thanks. :)

bassplyer92517 02-07-2011 04:30 PM

Re: Poor Gas Mileage
 
There are so many things that could cause a loss of MPG, especially after such a long time without a tune-up. I did a tune-up on my old car I had, 94 mercury cougar, after 11 years of abuse and I went from 12 to 26 MPG highway. It all just adds up.

HTR 04-05-2011 09:51 AM

Re: Poor Gas Mileage
 
I notice a differance in the grades of fuel on my older F150, How do the different grades affect the 3.0L Flex engines?

doyouquaxu 04-05-2011 10:13 AM

Re: Poor Gas Mileage
 
i would check the fuel filter, MAF, and spark plugs. you might want to replace the fuel filter and spark plugs anyways, and clean the MAF/airfilter.

wangbungal 04-05-2011 06:47 PM

Re: Poor Gas Mileage
 
do a tune up,wires spark plugs, carbon build could also cause it, fuel filter fuel cleaner seafoam maf sensor, egr intake throttle body, flush coolant change oil oil filter air filter change transmission oil

Tommy2 04-08-2011 10:35 AM

Re: Poor Gas Mileage
 
DEFINITELY do a tune up if you haven't yet. If you've been driving the same car for a long time you may not even notice a gradual loss in power over time.

I bet when you give a tune up it's gonna feel like a different truck. Air filter, spark plugs, fuel injection cleaner. And eventually I'd do the tranny fluid/filter, fuel filter, coolant, etc..

knightmare1015 04-09-2011 10:11 PM

Re: Poor Gas Mileage
 
Quote:

Originally Posted by wangbungal (Post 380068)
do a tune up,wires spark plugs, carbon build could also cause it, fuel filter fuel cleaner seafoam maf sensor, egr intake throttle body, flush coolant change oil oil filter air filter change transmission oil

I did all of that and more and went from burning a 1/4 of a tank on a 20 mile trip back to where it was supposed to be. I'd also had the rear end flushed, the radiator also got flushed and I also had the tranny flushed out too and it made a world of difference in mine.

gocyclin 04-10-2011 07:27 PM

Re: Poor Gas Mileage
 
Quote:

Originally Posted by knightmare1015 (Post 385165)
I did all of that and more and went from burning a 1/4 of a tank on a 20 mile trip back to where it was supposed to be. I'd also had the rear end flushed, the radiator also got flushed and I also had the tranny flushed out too and it made a world of difference in mine.

how much did that cost you total?


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