gas mileage per tank help

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03 Mustang gT

New Member

Jan 6, 2009

103

0

0

seaford, New york

Jan 6, 2009

#1

• Jan 6, 2009

• #1

Hey im new to the mustang scene. My car (listed in sig) get between 140-170 miles per tank of gas. I dont have a check engine light so i dont think that its o2 sensors. also i can smell that the car is running rich. other than that can you guys think of any other things that can be causing the car to suck down gas this badly. BTW im not driving it hard. sorry if this has been posted before and thanks for the help

 

squeak93

15 Year Member

Jun 2, 2005

2,269

367

164

Joplin, Missouri

Jan 6, 2009

#2

• Jan 6, 2009

• #2

my old 04 with 4.30 gears in perfect condition saw 150-175 with spirited city only driving. It did a little better once I got rid of the 4 cats..

My current 98 with 1 dead cylinder and another 1/2 dead and 4.10 gears (check engine light on as well) gets 175 per tank.

(btw, a tank is full to 1/4 to me.) I ran the 98 240 miles the other day and was worried about running out and finding another filling station.

 

0

03 Mustang gT

New Member

Jan 6, 2009

103

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seaford, New york

Jan 6, 2009

#3

• Jan 6, 2009

• #3

im pretty sure that my car still has the stock gears, which i believe are 3.27. i bought this car used so i dont really know the extent of all the mods that have actually been done. but ive read that other people have been breaking 200 miles a tank easily and have much more mods done to their cars

 

squeak93

15 Year Member

Jun 2, 2005

2,269

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164

Joplin, Missouri

Jan 6, 2009

#4

• Jan 6, 2009

• #4

Doesn't sound like ur too far off. U sure ur taking it easy on the shifts? I myself am a spirited driver and only start to worry when I don't break 150. Also the type/brand of fuel will effect u. Here in MO they are mandated to use 10% ethanol and that will hurt mileage a bit.

 

0

03 Mustang gT

New Member

Jan 6, 2009

103

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seaford, New york

Jan 6, 2009

#5

• Jan 6, 2009

• #5

pretty sure im taking easy shifts...between 2-3k as for fuel in runnin on 87 from either an exxon or mobil station. and idk if it has any ethanol but right now im at around a 1/4 tank left and have already done 134 miles. my car is definatly running rich because you can smell raw gasoline in the exhaust. also try n get it into 5th gear as soon as possible

 

squeak93

15 Year Member

Jun 2, 2005

2,269

367

164

Joplin, Missouri

Jan 6, 2009

#6

• Jan 6, 2009

• #6

Have u ran the codes? Just b/c the cel isn't on doesn't mean there isn't a code present.

 

0

03 Mustang gT

New Member

Jan 6, 2009

103

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seaford, New york

Jan 6, 2009

#7

• Jan 6, 2009

• #7

i dont have a tuner to check for codes my self....either way my mechanic is getting the car to run an ecu check and to throw on some new front tires.....hopefully if somethin is wrong it wont break the bank.....o well

 

FoxRod87

Active Member

Feb 1, 2006

243

1

27

Carolina

Jan 6, 2009

#8

• Jan 6, 2009

• #8

My car gets about 240 per tank in city and over 300 on the hwy and it has 197,000 miles on the odometer. Mods in sig.

 

evil281

New Member

Jan 6, 2008

276

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0

Arizona

Jan 6, 2009

#9

• Jan 6, 2009

• #9

man i get 270 miles before light even comes on, thats all city, i guess i drive like a granny or something, stock gears, mods below

 

BlownStangGT

REPEAT

Founding Member

Jan 22, 2002

3,860

6

58

Lancaster, PA

Jan 6, 2009

#10

• Jan 6, 2009

• #10

With My 01 GT with blower, 3.73s, and 42lbs inj, etc, I have only filled it up once so far since I just got it, but I have 150 miles on half a tank and I can say 1/2 of that is highway and half of it is heavy on the throttle, I havnt driven it enough yet to see what it does, but it aint bad actually, sounds like you are way rich. Def. get the codes checked even if it aint flashing and maybe get on the dyno and get the afr read out?

 

0

03 Mustang gT

New Member

Jan 6, 2009

103

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seaford, New york

Jan 6, 2009

#11

• Jan 6, 2009

• #11

im pretty sure the guys at my shop will b able to check the air/fuel ratio...i have also debated on getting a dyno tune but thats going to run me a lot of money and i dont want to have to throw money down at that. hopefully my mechanics will get everything all worked out. other than the gas mileage the car run amazingly so ill keep u guys posted on what happens tomorrow.

 

'13_ImpactBlue_GT

Angry Little Elf

Mar 30, 2005

872

2

98

Where the men are men and the sheep are nervous

Jan 6, 2009

#12

• Jan 6, 2009

• #12

My last tank was 290+ miles and I had about a half gallon left.

 

squeak93

15 Year Member

Jun 2, 2005

2,269

367

164

Joplin, Missouri

Jan 7, 2009

#13

• Jan 7, 2009

• #13

Half a gallon left..... U sir are hard core....


I can't stand to let mine go below 1/4. I just don't trust the guages enough.

 

Stark77

Member

Jun 11, 2008

501

0

16

Tallahassee, FL

Jan 7, 2009

#14

• Jan 7, 2009

• #14

I'm getting about 250-260 per tank before the light comes on - but when the light comes on and I fill up the tank all the way (and I mean ALLLL the way) it takes at most 13.5 gallons. I want run the car until it's truly out of gas to find out if that's actually a 15 gallon tank in the back. One of my colleagues at work has a 2003ish E300 - diesel benz - that he installed a 20 gallon reserve tank in ( takes up a slice of the large trunk). I would love to have a reserve 10gallon fuel cell in the back so I could drive longer distances on the highway without frequent refills.

 

squeak93

15 Year Member

Jun 2, 2005

2,269

367

164

Joplin, Missouri

Jan 7, 2009

#15

• Jan 7, 2009

• #15

Its not the refills for me, its when I have to empty my own personal tank.....

 

Stark77

Member

Jun 11, 2008

501

0

16

Tallahassee, FL

Jan 7, 2009

#16

• Jan 7, 2009

• #16

I don't stop for that - I always keep an empty powerade bottle in the car.

 

S

Stangdriver13

Member

Jul 31, 2006

44

0

6

Jan 7, 2009

#17

• Jan 7, 2009

• #17

I have got as low as 170 driving strickly in the city and letting my car warm up for ten min in the winter, for the most part i get 200-220 on a tank in the city and 320-350 on the highway, last highway trip I got 26.5 mpg driving 75 the whole way. I always use shell v-power gas, no substitutes what so ever. I would say chip and some BG 44k gas treatment, trust me for $25 you can't go wrong i gained 3mpg on the highway after using that stuff

 

'13_ImpactBlue_GT

Angry Little Elf

Mar 30, 2005

872

2

98

Where the men are men and the sheep are nervous

Jan 7, 2009

#18

• Jan 7, 2009

• #18

Stark77 said:

I'm getting about 250-260 per tank before the light comes on - but when the light comes on and I fill up the tank all the way (and I mean ALLLL the way) it takes at most 13.5 gallons. I want run the car until it's truly out of gas to find out if that's actually a 15 gallon tank in the back. One of my colleagues at work has a 2003ish E300 - diesel benz - that he installed a 20 gallon reserve tank in ( takes up a slice of the large trunk). I would love to have a reserve 10gallon fuel cell in the back so I could drive longer distances on the highway without frequent refills.

Click to expand...

Doesn't that Mercedes diesel get in excess of 28+ MPG?

And I wonder if anyone has ever fabricated and fitted an extra fuel cell into a Mustangs trunk

 

FoxRod87

Active Member

Feb 1, 2006

243

1

27

Carolina

Jan 7, 2009

#19

• Jan 7, 2009

• #19

you can buy a 22 gallon fuel tank that replaces the stock one. I think it is 1000.00 from Mustangs Unlimited.

 

0

03 Mustang gT

New Member

Jan 6, 2009

103

0

0

seaford, New york

Jan 8, 2009

#20

• Jan 8, 2009

• #20

got the car back and it turned out that the ignition coil for cylinder 5 was shot. also the gas stations have 10 % ethanol which someone mentioned kills gas mileage....guess those were my problems