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  • Bad gas mileage? New fuel pump?

    Hey just wanted to ask a question. My 98 3.8 is getting about 220-240 per tank an its starting to get to me. I know it could be the tires, I know it could be because I drive it pretty hard.

    I could probably pull a few mpg with a new K&N since I have a fram right now, I dont think I need a tune up because I did one not too long ago, just a little less than one year ago.

    What suggestions would you give me to up the gas mileage. I was going to get new tires (which I need) new spark plugs, new wires, possibly a new fuel pump, a new K&N air filter. Fuel filter perhaps? Run some injector cleaner or seafoam? Anything in here sound about right?
    1998 Firebird 3.8, A4<br />Mods: Alum Ds, Yank TC 2800 stall, Rksport lid, FTRA, SLP air temp sensor, K&N, Flowmaster catback 2.5\" w/cutout, 3:42 gears w/LSD<br />Best E/T: 15.6 @ 86 mph (w/o gears / lsd or verter)<br />Best 60: 2.234<br /><a href=\"http://www.teamfoxfire.iwarp.com\" target=\"_blank\">www.teamfoxfire.iwarp.com</a> -- club site<p>To come?: l67 piston package hardened, turbo? spray? low 12\'s? well see

  • #2
    nm, i was thing it was 320

    [ May 07, 2003: Message edited by: TheRealWave ]</p>
    2002 Black FireBird M5 2-5-02<br />Red BMR strut bar<br />Dynomax Super Turbo muffler with FastToys.com tips.<br />4 Coats of Zaino - Better every time<p>Need to post pictures? Do it <a href=\"http://www.thenebula.com/carpics/\" target=\"_blank\">here</a>. its <b>easy</b> and <b>free</b>.<br />Change your own oil. <a href=\"http://www.thenebula.com/firebird/oil/\" target=\"_blank\">click here</a>.

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    • #3
      <blockquote>quote:</font><hr> Thats not bad gas mileage. <hr></blockquote>

      I get between 320 and 340 per tank up here in the altitude of Colorado. That doesn't sound right to me... maybe I'm the exception, though.

      Try cleaning your MAF sensor, cleaning/replacing your air filter, plugs/wires, have your cat checked etc.

      [ May 07, 2003: Message edited by: sped214 ]</p>
      1997 Y87 Camaro with a motor and some stuff.

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      • #4
        Thx for the suggestions, ill get the cat checked when I get my electronic cutout installed. The wires and plugs will have to wait cus I dont feel like doing that in the next few days.
        1998 Firebird 3.8, A4<br />Mods: Alum Ds, Yank TC 2800 stall, Rksport lid, FTRA, SLP air temp sensor, K&N, Flowmaster catback 2.5\" w/cutout, 3:42 gears w/LSD<br />Best E/T: 15.6 @ 86 mph (w/o gears / lsd or verter)<br />Best 60: 2.234<br /><a href=\"http://www.teamfoxfire.iwarp.com\" target=\"_blank\">www.teamfoxfire.iwarp.com</a> -- club site<p>To come?: l67 piston package hardened, turbo? spray? low 12\'s? well see

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        • #5
          i only get 240 miles with my v6 also. It's a little under 20 per gallon. What's up!?!?!?!
          ~The Guru\'s Guru~<br />1999 Camaro,K&N,!MAF<br />!airsilencer,3.08s,<br />NGK-TR6\'s,Taylor Blue 8mm wires,FRAM,A4,Catco Cat, Magnaflow 3 inch catback,transgo shift kit<br />Waiting: RK sport headers, custom y pipe electric cutout<br /><a href=\"http://www.cardomain.com/id/divinejc\" target=\"_blank\">www.cardomain.com/id/divinejc</a>

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          • #6
            I have the exact same problem w/my 98 3.8 220-240 miles MAX

            ONLY recently have i found that my fuel pump is dying.....and as a result of IT dying my starter died and i had it replaced wednesday.. now onto the fuel pump!

            replace that dude b4 everything else crashes
            Soon to be Mommy!<br />2005 Honda Pilot EX-L

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            • #7
              You might also want to see about replacing your oxygen sensors (O2 sensors). I'm not a pro, but I think they may be giving bad air/fuel readings to your engine management system, throwing off the amount of fuel it's dumping into your cylinders.

              Cassie, did you ever have your fuel filter replaced before your pump went bad? I believe the fuel pumps in our vehicles are susceptible to early failure if they have to work too hard to pump the fuel past the filter.

              [ May 12, 2003: Message edited by: L32NeedinTurbo ]</p>
              \'94 3.4L V6 M5<br />Check out my <a href=\"http://l32projekt.ionichost.com/\" target=\"_blank\">website</a><br />Let me know what you think!<br /> <a href=\"mailto:l32projekt@hotmail.com\">l32projekt@ hotmail.com</a>

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