Bad Gas Mileage?

[Bosko5.0]

What would cause bad gas mileage ?


completely stock 95 vert, ive already cleaned the MAF.

 

[MI95Cobra]

how bad are we talking???

 

[MI95Cobra]

how many miles per gallon???

 

[TheDamned]

welcome to the joy of owning a mustang v8.

with a full tank i do around 120-150miles.

 

[215what]

Yeah these car's suck on gas. Im lucky to get 170 a tank!

 

[bill302]

bad o2 sensor(s) will cause a drop in gas mileage pull the codes...autozone will do it free then repost results...

 

[215what]

bad o2 sensor(s) will cause a drop in gas mileage pull the codes...autozone will do it free then repost results...

No they wont only OBD 2.

 

[bill302]

No they wont only OBD 2.

as we all know here obd1's have 2 o2 sensors and if one is malfunctioning it will cause a drop in gas mileage what exactally are you saying 215what? you may need to do a search and state the facts if your saying a bad o2 sensor will not cause a drop in gas mileage on an obd1 system!

 

[95BlackTan50]

I think he's saying that autozone won't pull codes for an OBD-I car.

 

[bill302]

ok if thats the problem refer to this link to pull codes...
http://www.muscularmustangs.com/test1.php

 

[HISSIN50]

The OBD-I retrieval is hit or miss, and seems to be regional. Quite a few guys here have had OBD-I codes pulled, but I once asked and they would not. My Sis has an EEC-IV Ford and they pulled them for her. Maybe I'm not pretty enough.

 

[The Green GT]

They pull OBD I codes here at Advance Auto Parts.

And I wish I knew what kind of gas miledge I get. My odo and trip meter have been broken since I got the car.

I drive to school 7 times a week and can make 3-4 trips on a single tank, depending on how much I drive at home.
It sucks. But as I always say, you gotta pay to play.

 

[reddy351]

Ummm. I was a little upset that I get "only" 240-260 miles on a tankfull. Geez! I guess I'm lucky! (Yes, I do run it hard, most of the time.)

 

[Synned]

Uh, I only get like 180 to the tank too....
New o2's, new MAF.
Its very very sad....
What could cause it to be THAT bad? 270-170 is huge....

 

[sade04]

guys im currently fighting the same problem...summer time i get around 240-245 max per tank. in the winter time, i average about 180 or less. wtf??? also in the winter my car seems to never come up to temp, and overheats when the weather gets warm

 

[MI95Cobra]

i get 200 miles per tank....

 

[The Green GT]

We have 16 gallon tanks right?

 

[Bosko5.0]

i get about between 190-200 per tank that was past full to past empty and i believe the tank is 15 gal.

which means i get about 13 mpg, What was the orig gas mileage on the gt's

And I went from a 1.8vw to a 5.0ford theres a big difference in power

I am going to try and run some codes the website mentioned above should help me.

Also would a vaccum leak cause a drop in mileage?

 

[divit250r]

guys im currently fighting the same problem...summer time i get around 240-245 max per tank. in the winter time, i average about 180 or less. wtf??? also in the winter my car seems to never come up to temp, and overheats when the weather gets warm

Winter blend fuels have different additives to make it easier to cold-start, and that can reduce mileage. I get around 240-260 if I don't beat on it the whole time. That's with the stuff in my sig. Before any mods, I could get over 300 out of a tank with the stock 2.73 gears.

Scott

 

[TheDamned]

i get 150-180miles a full tank and i'm not even hammering it.. thats the thing. i shift like a grand-pa to save gas!