Cutrara

#31

I skimmed through this topic but didn't read it the whole way. Did anyone mention your O2 sensor might be bad? I was working in the engine bay and had mine disconnected and I forgot to reconnect it. I got like 200 miles on a tank, but it was weird, no CEL.

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QUOTE (cjh4l22 @ May 15, 2009 - 4:02 AM)hey, nice mod does it come in hetero?Need parts?I'm parting out a '94 ST

creis

#32

eh i have run with a bad O2 cencor, did not get bad milage by anymeans, maybe a little below normal, more things then that have to be wrong to get that bad of milage, maybe your fuel guage is off (although you would probably notice if your only putting in like 5-6 gallions. at the pump) try re-setting the ecu, and when you start it up in the morning let it idel a bit but look for excess gas out the exhaust. could hook an air/fuel guage up and see if its running really rich.

hopefully the doc found out the problem with it today.

95gtschick

#33

well everything is fine...

our car's are supposed to get approx. 25mpg and i'm getting 22 and they say that's okay.

Valo666

#34

Krysten, i had the same problem, i was gettin horrible milage. I was drivin 40 min to and from school every day and i was fillin up every 3 days. What i did was, change wires, plugs, cleaned air filter, oil, wheel bearings, got nitrogen in my tires so they wont deflate as easily, checked my cylinder head, timing belt, P/S belt, greased up every thing in the front and rear end and been takin it easy. Now, this week alone, i went out 2 my friends place on the other side of the city, to and from work daily, picking up and droppin off my gf at work daily, gone shopping, and just been crusing. This now im fillin up every 2 weeks.

95gtschick

#35

what about injector cleaner?

spunky393

#36

tell you what, this is just a whim, but look around the gas tank. make sure where it is welded from two pieces to one, it isn't leaking just a tiny bit around it. it took me a long as time to figure out that's why i wasn't getting good gas miles on my 91 mercury capri with a 1.6L engine in it. the gas tank was leaking at the front of the weld, just a tiny bit, so it wasn't leaving any type of puddle.

also, what weight of oil are you using?
check hoses that come and go from your under-hood fuel pump, etc. etc.

make sure they're not crack and stuff. after you got some heavy pressure going through those lines, it could be leaking out.

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The most important lesson I learned from Karate-Dô Kyôshan–“You can not be what you do not believe you are”

elvasoshexai

#37

wow... i wish i could see the #s some of you people get... i get 20mpg highway driving and 19mpg mixed... when i was trying my best to conserve gas... the best i was able to get for all city(well.. suburban) driving was 21mpg...

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98 Celica GT -- 5S-FTE: 230WHP 237FT-LBS06 Civic EXMy For Sale Thread

blu94gt

#38

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QUOTE(elvasoshexai @ Feb 3, 2006 - 8:18 PM) [snapback]388703[/snapback]

>
wow... i wish i could see the #s some of you people get... i get 20mpg highway driving and 19mpg mixed... when i was trying my best to conserve gas... the best i was able to get for all city(well.. suburban) driving was 21mpg...

I think you could use a tune up lol. My Mustang GT didn't even get that bad of mileage

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1999 Celica GT

Sev408

#39

yeah 20mpg is pretty bad. I think i pulled 460 out of my tank last week.

I would look at your sparkplugs, wires, injectors and if you havent replaced your timing belt yet I would. It wont really affect gas but it needs to be done at around 110k.

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hows it taste motha f*cka

95gtschick

#40

i filled up today and calculated my mileage.... 17.83mpg. yeah, stupid dealership. totally calculated it wrong. they said our cars are only supposed to do 25mpg, and mine was doing approximately 22... i think not!

Bigmeanbulldog55

#41

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QUOTE(95gtschick @ Feb 8, 2006 - 4:03 PM) [snapback]390878[/snapback]

>
i filled up today and calculated my mileage.... 17.83mpg. yeah, stupid dealership. totally calculated it wrong. they said our cars are only supposed to do 25mpg, and mine was doing approximately 22... i think not!

I get way better milage out of my 5sfe. And I'm slitely modded. Seriously, 25 at the least here. And I don't baby the car either, it's driven fairly hard sometimes.

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Live Free, Be Happy

Negative

#42

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QUOTE(95gtschick @ Feb 8, 2006 - 9:03 PM) [snapback]390878[/snapback]

>
i filled up today and calculated my mileage.... 17.83mpg. yeah, stupid dealership. totally calculated it wrong. they said our cars are only supposed to do 25mpg, and mine was doing approximately 22... i think not!

Something is def wrong then. I get 300m to a tank (22mpg) in Houston traffick. Houston has one of the worst traffick ratings in the country. Fully 50% or more of my driving time is sitting in traffick not moving. I'd get a second opinion about your fuel system.
Maybe hook up a good analog A/F meter and see if you are constantly running rich. Also what RPM do you idle at? That can have a huge effect on gas mileage.

GeEkBoY

#43

Again, I will add to what has been said, something is wrong with your car. Without seeing the car, best guess would be the O2 sensor as many have mentioned. others are sparkplugs, wires, distributor, coil, that anchor dragging behind your car.

I get up to 675 km (420 miles) highway, 550 km (342 miles) Toronto traffic per tank and I have over 265,000 km on the car. The lowest I have remembered is 500 km (311 miles) and that was city traffic in the winter when the thermostat was gone and the car would not fully warm up.

and by the way, they did sell STs in Canada but they sold poorly and were only offered for the first couple years.

Clyde

#44

If i were you, id just buy a ****ty small car. its better for ST's to stay ST's or move up to GT's than for GT's to move down to ST level. You'll wish you had a GT later on in the track.

Better get ur engine tuned, cos mines ok.

blu94gt

#45

how exactly are you calculating your gas mileage? How many miles do you put on a tank of gas? Maybe there's an error there

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1999 Celica GT

95gtschick

#46

okay well here, someone else calculate it for me.

191.8 miles, to 48.89 litres (you'll have to calculate it into gallons)

elvasoshexai

#47

did you try resetting ur ECU? i heard that helps...

wow.. with those #s i got 14.8mpg... or am i calculating it wrong now? hah

my 5sfe camry gets about... 375km city + minor (5-10min) highway driving in the suburbs of toronto.. and i thought that was bad

This post has been edited by elvasoshexai: Feb 9, 2006 - 11:10 AM

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98 Celica GT -- 5S-FTE: 230WHP 237FT-LBS06 Civic EXMy For Sale Thread

Alchemist_57

#48

I've kindof been having the same problem. My mileage was okay at first, but after i did a tune up, it got worse. I replaced both O2 sensors, plugs, plug wires, fuel filter, air filter, oil & filter.

I usually run premium, and sometimes mid-grade, fuel in it. I don't understand how my mileage got worse.

How would you go about resetting the ECU? And what exactly does that do/affect? Any help is appreciated.

elvasoshexai

#49

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QUOTE(Alchemist_57 @ Feb 9, 2006 - 6:55 PM) [snapback]391454[/snapback]

>
I've kindof been having the same problem. My mileage was okay at first, but after i did a tune up, it got worse. I replaced both O2 sensors, plugs, plug wires, fuel filter, air filter, oil & filter.

I usually run premium, and sometimes mid-grade, fuel in it. I don't understand how my mileage got worse.

How would you go about resetting the ECU? And what exactly does that do/affect? Any help is appreciated.

resetting the ECU is supposed to allow the computer to "re-learn" the way you drive and so it can i guess "conform" to the way you drive possibly increasing your gas mileage. So if you (or the previous owner) used to drive like an ass which caused crap gas mileage... resetting the ECU then driving conservatively for about a week may allow you to see better gas mileage

http://www.6gc.net/index.php?action=howto&itu=33

hm.. maybe i should take my own advice and try this too

This post has been edited by elvasoshexai: Feb 9, 2006 - 7:47 PM

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98 Celica GT -- 5S-FTE: 230WHP 237FT-LBS06 Civic EXMy For Sale Thread