My CRAP gas mileage lately...
#1
Join Date: May 2005
Location: MI
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My CRAP gas mileage lately...
Just as the title says......My gas mileage has taken a quick "drop" in the past 3 fill-ups....I have NO idea why...My driving habbits havent changed at all...
It went from the usuall 14/16 mixed city-hwy
to 10/11 mixed city-hwy....Yeah not good...
I understand that the oil manafacturers put an additive? in the gas when the weather starts getting colder?
Any suggestions?
It went from the usuall 14/16 mixed city-hwy
to 10/11 mixed city-hwy....Yeah not good...
I understand that the oil manafacturers put an additive? in the gas when the weather starts getting colder?
Any suggestions?
#2
This is a really wide open question.
One thing that can hit you hard is when your oxygen sensors get some miles/time on them and get lazy. The result is poor mixture control. When this is the problem, a new set of upstream sensors can often bring the MPG right back to normal.
Another problem could be your MAF sensor. It can get contaminated over time especially if you run an oiled gauze filter like a K&N. Another possibilty could be a VERY dirty air filter.
Gasoline is reblended about 4 times a year in most of the U.S. to make it compatible with the expected average temperatures.
You could be using a fuel with alcohol added but that is limited to 10% in Michigan in any fuel labeled as "unleaded gasoline". That would cost some fuel economy but not more than 1 MPG. If it has any alcohol added, regulations require it to be labeled as such.
One thing that can hit you hard is when your oxygen sensors get some miles/time on them and get lazy. The result is poor mixture control. When this is the problem, a new set of upstream sensors can often bring the MPG right back to normal.
Another problem could be your MAF sensor. It can get contaminated over time especially if you run an oiled gauze filter like a K&N. Another possibilty could be a VERY dirty air filter.
Gasoline is reblended about 4 times a year in most of the U.S. to make it compatible with the expected average temperatures.
You could be using a fuel with alcohol added but that is limited to 10% in Michigan in any fuel labeled as "unleaded gasoline". That would cost some fuel economy but not more than 1 MPG. If it has any alcohol added, regulations require it to be labeled as such.
#13
Join Date: May 2005
Location: MI
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Originally Posted by D.
Mark..
I use QD contact cleaner for my MAF. Its pricey, but it works the best. I clean my MAF and Filter once a month.
D.
I use QD contact cleaner for my MAF. Its pricey, but it works the best. I clean my MAF and Filter once a month.
D.
and am i correct on this-VV
I'll check out the MAF tomorow bob, its the sensor in the air tube, right?
#14
Originally Posted by 01xltranger4x4
Awesome, thanks D.
and am i correct on this-VV
yah i wouldnt really know where it is, i never have had to mess with it! haha
and am i correct on this-VV
yah i wouldnt really know where it is, i never have had to mess with it! haha
take your air filter off like your changin it..the tube that you lift up lookin it..see that little metal thingy thats it..
i didnt know if you were askin or what..so i thought id explain anywayz
#15
#18
i've lost 30-70 miles per tank in the past couple of weeks, nothing changed to the truck. But i think because it's been really windy and cold out, that would have an effect. But i only let it warm up like 3 mins before i leave[i used to let it idle about 2 min before i was ready to move when it was warm].
Have you had an alignment lately? I was getting horrible gas milage this tank, 85, and i was just around 3/8ths full, i got an alignment today[and it was bad] and i drive 50 miles tonight, mixof highway and town, and i'm barely before a 1/4 tank, if not right at it.
Have you had an alignment lately? I was getting horrible gas milage this tank, 85, and i was just around 3/8ths full, i got an alignment today[and it was bad] and i drive 50 miles tonight, mixof highway and town, and i'm barely before a 1/4 tank, if not right at it.
#19
Join Date: Oct 2004
Location: Coal Region, MTC to be exact...heart of the coal region.
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several factors can affect gas milage. like what most said anything from actual sensors to allignment. could even be a bad batch of fuel, it will take a few tanks to get all the bad gas out. and dont forget tire pressure...
if ur truck has 100,000 or more miles id change the o2 sensor anyway. also cleaning the MAF, TB and IAC could be done. i usually clean my TB and IAC every 6 months, but i dont drive that much.
if ur truck has 100,000 or more miles id change the o2 sensor anyway. also cleaning the MAF, TB and IAC could be done. i usually clean my TB and IAC every 6 months, but i dont drive that much.
#21
#22
#23
Originally Posted by MonsterGuy
i just tryed to clean my maf and it has special screws on it do i need to buy something special from dealier to take it out it looks like a tourks but with a raise in the middle so the driver has to be hollow in the middle
Or you could avoid that problem by not removing the MAF from the housing and just cleaning it in place. Don't get any of the cleaner on the air filter element.
#24
#25