# gas milage issue **URL:** \ **Category:** PittSpeed Off Topic\ **Created:** [February 18, 2007, 8:06pm UTC](https://forums.speedlife.net/t/gas-milage-issue/188115 "2007-02-18T20:06:02Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![flyinglow57](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/flyinglow57/32/5978_2.png) [@flyinglow57](https://forums.speedlife.net/u/flyinglow57)\ **Post date:** [February 18, 2007, 8:06pm UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/1 "2007-02-18T20:06:02Z")
after lookin thru the gas milage forum i am wondering why i am getting such horrible gas milage. let me tell you about the car first 97 grand am GT 3.1 came in it stock i bought it with a blown motor and put in the all mighty 3.4 now i kept the stock 3.1 injectors and computer and put in the 3.4 lower/upper intake with no EGR. it has a code in the computer for no EGR right now. and that is the only code after 4-5 months of driving it. the car starts right up i drive it 3 miles to work and 3 miles home. i get about 150-160 miles a tank and that lasts me about 3 weeks as of now. im kinda disapointed in the 11 miles/gal or so. any swap guys or GM guys that have any ideas why i get shitty gas milage. thanks ---
**Author:** ![Sinner6.0L](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sinner6.0l/32/6016_2.png) [@Sinner6.0L](https://forums.speedlife.net/u/Sinner6.0L)\ **Post date:** [February 18, 2007, 8:25pm UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/2 "2007-02-18T20:25:05Z")
plugs, wires, O2, clean MAF, clean injectors ??? egr always helps gas mileage, why not run it? ---
**Author:** ![Jordons\_Pontiac](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@Jordons\_Pontiac](https://forums.speedlife.net/u/Jordons_Pontiac)\ **Post date:** [February 18, 2007, 9:10pm UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/3 "2007-02-18T21:10:26Z")
Last time i checked a few months ago i was in the rage of 15 - 20 ---
**Author:** ![The1SloR\_T](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/the1slor_t/32/5984_2.png) [@The1SloR\_T](https://forums.speedlife.net/u/The1SloR_T)\ **Post date:** [February 19, 2007, 4:25am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/4 "2007-02-19T04:25:06Z")
my buddy is haveing problems with gas mileage too,replaced allll kinds of stuff and still only getting like 7-15mpg… he’s got a 2001 i think… is that the 3.4 also? ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [February 19, 2007, 5:11am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/5 "2007-02-19T05:11:52Z")
does it have any gas leaks?:eek4: did u change fuel filter? ---
**Author:** ![xlogic](https://avatars.discourse-cdn.com/v4/letter/x/59ef9b/32.png) [@xlogic](https://forums.speedlife.net/u/xlogic)\ **Post date:** [February 19, 2007, 5:24am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/6 "2007-02-19T05:24:01Z")
> [@The1SloR/T"](#): > > my buddy is haveing problems with gas mileage too,replaced allll kinds of stuff and still only getting like 7-15mpg… he’s got a 2001 i think… > > is that the 3.4 also? Pontiac/GM motors don’t really go by year…3100sfi and the 3400sfi are the engines used in some of the newer vehicles…grand am gt’s after like 2000(i may be wrong) were more known to have the 3.4 ---
**Author:** ![imported\_Sleeper](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_sleeper/32/5939_2.png) [@imported\_Sleeper](https://forums.speedlife.net/u/imported_Sleeper)\ **Post date:** [February 19, 2007, 7:42am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/7 "2007-02-19T07:42:13Z")
> [@what do you guys think?](https://forums.speedlife.net/t/what-do-you-guys-think/28159/7): > > Pontiac/GM motors don’t really go by year…3100sfi and the 3400sfi are the engines used in some of the newer vehicles…grand am gt’s after like 2000(i may be wrong) were more known to have the 3.4 WRONG! ---
**Author:** ![4doors5gears](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/4doors5gears/32/6006_2.png) [@4doors5gears](https://forums.speedlife.net/u/4doors5gears)\ **Post date:** [February 19, 2007, 8:12am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/8 "2007-02-19T08:12:28Z")
Def. sounds like EGR is causing the problem, why didn’t you hook up teh system? If you need an adapter plate for the 3400 UIM, I can more than likely find you one, then you just plug it up to the original. I had shitty gas mileage on my Beretta (3100), but I changed out the plugs/wires/fuel filter, plus I had to replace some stuff relative to the evap system, which is probably unrelated, but still. I would def. try to correct the EGR though if possible. After I replaced all those though, I noticed I can get about 380 miles to a full tank (15.7 gal) ---
**Author:** ![Silver\_WS6](https://avatars.discourse-cdn.com/v4/letter/s/c0e974/32.png) [@Silver\_WS6](https://forums.speedlife.net/u/Silver_WS6)\ **Post date:** [February 19, 2007, 8:30am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/9 "2007-02-19T08:30:00Z")
i know my gasd millage sucks when the cars cold !might not have a chance to even warm up ---
**Author:** ![eurodad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/eurodad/32/5988_2.png) [@eurodad](https://forums.speedlife.net/u/eurodad)\ **Post date:** [February 19, 2007, 8:35am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/10 "2007-02-19T08:35:51Z")
quit picking up the fat chicks and i bet it goes up. ---
**Author:** ![SoLow](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/solow/32/6001_2.png) [@SoLow](https://forums.speedlife.net/u/SoLow)\ **Post date:** [February 19, 2007, 8:43am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/11 "2007-02-19T08:43:28Z")
> [@Finally back together...again \*pics\*](https://forums.speedlife.net/t/finally-back-together-again-pics/28141/39): > > quit picking up the fat chicks and i bet it goes up. 🤣 ---
**Author:** ![SixSpeed454SS](https://avatars.discourse-cdn.com/v4/letter/s/e19adc/32.png) [@SixSpeed454SS](https://forums.speedlife.net/u/SixSpeed454SS)\ **Post date:** [February 19, 2007, 9:02am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/12 "2007-02-19T09:02:18Z")
> [@Finally back together...again \*pics\*](https://forums.speedlife.net/t/finally-back-together-again-pics/28141/39): > > quit picking up the fat chicks and i bet it goes up. :kekegay: ---
**Author:** ![fshowcars](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fshowcars/32/5937_2.png) [@fshowcars](https://forums.speedlife.net/u/fshowcars)\ **Post date:** [February 19, 2007, 10:34am UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/13 "2007-02-19T10:34:47Z")
it’s the shitty winter gas mixture… wait for sping, it’ll get better ---
**Author:** ![SoLow](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/solow/32/6001_2.png) [@SoLow](https://forums.speedlife.net/u/SoLow)\ **Post date:** [February 19, 2007, 12:41pm UTC](https://forums.speedlife.net/t/gas-milage-issue/188115/14 "2007-02-19T12:41:08Z")
> [@Hybrid Defi/TiAL Sale](https://forums.speedlife.net/t/hybrid-defi-tial-sale/27833/11): > > it’s the shitty winter gas mixture… wait for sping, it’ll get better tru…i noticed a difference the little bit my truck was on the road in the winter…🤣