Really bad gas mileage

Cobain03

Active Member

Aug 27, 2003

996

0

36

Lexington, Ky

Feb 19, 2007

#1

• Feb 19, 2007

• #1

i can literally watch the gas hand move. i dont drive crazy. i shift at 2k rpms and dont hot rod it. whats the deal?

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Feb 19, 2007

#2

• Feb 19, 2007

• #2

so how many MPG?
what are your mods?
if i get on it a lot i get 7 mpg.

 

Cobain03

Active Member

Aug 27, 2003

996

0

36

Lexington, Ky

Feb 19, 2007

#3

• Feb 19, 2007

• #3

100% stock, down to the air filter. next time i fill up i will put the trip meter on and see but by the way its actin, i get better mpg in my 65 lol.

 

mustangkid05

New Member

Mar 10, 2006

199

0

0

Feb 19, 2007

#4

• Feb 19, 2007

• #4

i no i get like 9mpg but my service engine light is on since the h pipe i been getting horrible gas mileage

 

four six

Member

Jan 19, 2006

506

2

18

Hobart, IN

Feb 19, 2007

#5

• Feb 19, 2007

• #5

mustangkid05 said:

i no i get like 9mpg but my service engine light is on since the h pipe i been getting horrible gas mileage

Click to expand...

?? The H pipe shouldn't cause bad MPG

 

ADRENLN

Active Member

Apr 16, 2003

2,342

3

49

NJ

Feb 19, 2007

#6

• Feb 19, 2007

• #6

if your stock something sounds wrong there. you might want to post this in tech.

 

mustangkid05

New Member

Mar 10, 2006

199

0

0

Feb 19, 2007

#7

• Feb 19, 2007

• #7

four six said:

?? The H pipe shouldn't cause bad MPG

Click to expand...

thats what i thaught too but maybe there is something wrong with one of my 02 sensors or somethting that is causing it

 

AmBo

Active Member

Feb 3, 2004

1,027

1

36

New Jersey

Feb 19, 2007

#8

• Feb 19, 2007

• #8

I'm supercharged and get anywhere from 10-15 depending how much I get on it.

 

FoxRod87

Active Member

Feb 1, 2006

243

1

27

Carolina

Feb 20, 2007

#9

• Feb 20, 2007

• #9

I get 19 mpg with my mods listed in my sig. But if the car is new to you the gas hand does go down quick after it comes off of the full mark. It should be getting around 20 or 21 mpg.

 

MyBloodRunsBlue

New Member

Feb 1, 2007

127

0

0

Feb 20, 2007

#10

• Feb 20, 2007

• #10

perhaps change your spark plugs faulty spark plugs could cause bad gas mileage

 

tjmaxx

Member

Jun 21, 2004

157

3

19

Feb 20, 2007

#11

• Feb 20, 2007

• #11

Yea try doing a good tune up. Also it might be that your gas gauge is broken. On my truck if I go 50 miles it will say that im about on empty, but in reality I can go 300 miles to a tank. So I dont even pay attention to the gauge. How many gallons is it taking at the pump?

 

mustangkid05

New Member

Mar 10, 2006

199

0

0

Feb 20, 2007

#12

• Feb 20, 2007

• #12

well i usually put it just like 10$ wich gets me a little more then a 1/4 tank and thats lasts me like 50-60 miles not even some times what plugs do you guys reccomend?

 

GToddyT5

Founding Member

Jan 14, 2002

553

0

16

Hamilton, NJ

Feb 20, 2007

#13

• Feb 20, 2007

• #13

mustangkid05 said:

well i usually put it just like 10$ wich gets me a little more then a 1/4 tank and thats lasts me like 50-60 miles not even some times what plugs do you guys reccomend?

Click to expand...

Autolites FTW! Don't need anything more on a stock car.

 

mustangkid05

New Member

Mar 10, 2006

199

0

0

Feb 20, 2007

#14

• Feb 20, 2007

• #14

ok thanks alot

 

D

Dragstr05

New Member

Dec 21, 2004

643

1

0

Stafford VA

Feb 20, 2007

#15

• Feb 20, 2007

• #15

As stated above, the needle does seem to come down VERY quickly after you get off the full mark. Also I have noticed that it doesnt move down simultaneously either. It kinda goes down in increments. Mine might stay in the same spot for 25-30miles and if I catch it move, it looks like a giant drop. I usually get 55-60miles before it comes off the full mark.

If your're having a severe mileage issue, I wouldnt be so quick to think a tune up will fix all your problems. Dont forget we are in winter for starters, plus we now have this 10% ethanol crap (atleast I do), and I deffinately dont get as good as mileage as I was getting this past summer. I'd have to approximate a 30-40 mile per tank difference. I havent "recorded" it, but sure seems that way.

As for the spark plugs...I just changed mine at 95k miles which were the ones from when the car was built for all I know (2nd owner), and I noticed no increase in MPG.

 

9

97Vicious281

New Member

Jul 21, 2005

35

0

0

Atlanta, GA

Feb 21, 2007

#16

• Feb 21, 2007

• #16

Dude I get the same problem. I had went 92 miles last week and filled up with 7 gallons and thats like 13 mpg. I had my MA sensor cleaned out and all that jazz but it still sucks. I can usually go about 280 miles on a full tank which sucks too.