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Bad Gas Mileage 4x2 tacoma

Discussion in '1st Gen. Tacomas (1995-2004)' started by billzyota, Feb 15, 2009.

  1. Feb 15, 2009 at 6:43 PM
    #1
    billzyota

    billzyota [OP] New Member

    Joined:
    Feb 15, 2009
    Member:
    #13646
    Messages:
    3
    Gender:
    Male
    Birmingham, Al.
    Vehicle:
    98 Tacoma 4x2, 2.4L
    I just bought this little 98 tacoma 4x2 with a 2.4L and automatic. it has 111k miles on it.

    The problem is that it is only getting about 16.5 mpg (city driving). i would have thought it would do better.

    It has been tuned up (new plugs and wires) with a fresh air filter. It runs ok for the most part. it seems like there is a little slow pulsing in the motor as it goes. hard to describe but it seems to rev and slow slightly as it's going at constant speed.

    i just cleaned the throttle body today and it seems to be running a little better.

    any suggestions or ideas would be appreciated.
     
  2. Feb 16, 2009 at 10:16 AM
    #2
    ARB1977

    ARB1977 Don't be a dick

    Joined:
    Feb 12, 2009
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    537
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    North Texas
    Vehicle:
    2002 TRD 4X4 Auto 5VZFE
    OME 881's, Deaver 8's, Icon remote resiviors
    Try disconnecting the battery and cleaning out the mass airflow sensor. I highly dought your front o2 sensor is going out. Some may say try sea foam.
     
  3. Feb 16, 2009 at 3:43 PM
    #3
    2004Taco

    2004Taco Well-Known Member

    Joined:
    Sep 28, 2008
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    511
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    Lakewood,Ca
    Vehicle:
    04 PreRunner SR5 Trd
    Magnaflow and Deckplate Mod Billet grille
    I heard the Z Max works really well too. Hows your Tired pressure?
     
  4. Feb 16, 2009 at 3:45 PM
    #4
    dually

    dually Low and slow

    Joined:
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    Interstate underpass
    Vehicle:
    05 Indigo 4wd Longbed
    Not as many as the 98..
    SeaFoam the beast. Might need a valve adjustment that that many miles... I get about 20mpg.
     
  5. Feb 16, 2009 at 4:25 PM
    #5
    billzyota

    billzyota [OP] New Member

    Joined:
    Feb 15, 2009
    Member:
    #13646
    Messages:
    3
    Gender:
    Male
    Birmingham, Al.
    Vehicle:
    98 Tacoma 4x2, 2.4L
    Tires are fine. i ran lucas fuel system cleaner through it when i bought it.

    the maf sensor didn't look too dirty but i could give that a try.
    has anyone used the crc stuff before?
     
  6. Feb 17, 2009 at 4:12 PM
    #6
    ubermx5

    ubermx5 Well-Known Member

    Joined:
    May 21, 2008
    Member:
    #6783
    Messages:
    264
    Santa Clara CA
    Vehicle:
    98 2.4 5 speed
    K&N Air filter
    Redline Fuel cleaner wil help.
    Put it ina tank that is from 1/4 to empty. then fill it with Chevron 89.

    Also do the battery disconnect thing.
    Also get the Computer scanned for stored codes.

    Add 5 to 10 PSI of air in the tires to make sure they are good.
    If the ride is to harsh then lower back to the dorr sticker.

    The truck has factory size tires right?

    The only time I go bad milage like that was when I was pullinga trailor and fully loaded to almost Max compaticy and driving up a 50 mile hill...
     
  7. Feb 17, 2009 at 6:53 PM
    #7
    billzyota

    billzyota [OP] New Member

    Joined:
    Feb 15, 2009
    Member:
    #13646
    Messages:
    3
    Gender:
    Male
    Birmingham, Al.
    Vehicle:
    98 Tacoma 4x2, 2.4L
    thanks for the tips. i will try to get the codes read.
    this is a factory two wheel drive tacoma.
    what kind of gas mileage do you get in yours?
     
  8. Aug 27, 2009 at 11:04 PM
    #8
    VixTacom

    VixTacom SYC TACO

    Joined:
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    #18474
    Messages:
    334
    Gender:
    Male
    First Name:
    Victor
    Wayne, NJ
    Vehicle:
    PreRunner SR5 TRD
    LED's and Neon Glow inside, Blacked out front end, 4X4 with Locking Diff, 5spd Manual, TRD package, CB Radio, Gray Wire Mod, Thrush exhaust system, Tinted marker lights, tailights, interior lights
    a new cap and rotor help a lot wen my truck did that
     
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