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why is my gas milage down?

Discussion in '1st Gen. Tacomas (1995-2004)' started by revolution, Sep 4, 2011.

  1. Sep 4, 2011 at 10:56 PM
    #1
    revolution

    revolution [OP] Member

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    hey guys, my gas milage is down and my exhaust smells. i have a 2003 toyota tacoma trd and i cant figure out why.
     
  2. Sep 4, 2011 at 10:59 PM
    #2
    Jester243

    Jester243 mod status????

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    check your tire pressure, air filter, plugs...
     
  3. Sep 4, 2011 at 11:06 PM
    #3
    revolution

    revolution [OP] Member

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    i hand the o2 sensor replaced a few months ago. it smells like its running rich or to lean
     
  4. Sep 4, 2011 at 11:08 PM
    #4
    Fink

    Fink Motorboatin' SOB

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    What kind of drop are we talking? 1-2? 3-5?

    Fink[​IMG]
     
  5. Sep 4, 2011 at 11:08 PM
    #5
    ColtsTRD

    ColtsTRD .....

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    Maybe clean your MAF.
     
  6. Sep 4, 2011 at 11:14 PM
    #6
    revolution

    revolution [OP] Member

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    like 20 to 30 mpgs
     
  7. Sep 4, 2011 at 11:22 PM
    #7
    Detective_Dan

    Detective_Dan "Place original and witty user title here"

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    I hope you mean 20-30 miles per TANK, cause if you mean 20-30 mpg's then your f**ked
     
  8. Sep 4, 2011 at 11:23 PM
    #8
    revolution

    revolution [OP] Member

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    MAF? is that the throttle body?
     
  9. Sep 4, 2011 at 11:23 PM
    #9
    revolution

    revolution [OP] Member

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    ya per tank
     
  10. Sep 4, 2011 at 11:25 PM
    #10
    Fink

    Fink Motorboatin' SOB

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    That's nothing to worry too much about - that could be as simple as bad quality gas, or different driving habits.

    MAF = Mass Airflow Sensor

    Fink[​IMG]
     
  11. Sep 4, 2011 at 11:26 PM
    #11
    revolution

    revolution [OP] Member

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    but why does the exhaust smell
     
  12. Sep 4, 2011 at 11:27 PM
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    ColtsTRD

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    maybe you have an exhaust leak...and the smell is getting into the cab easier :notsure:
     
  13. Sep 4, 2011 at 11:27 PM
    #13
    Fink

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    What is the smell? If it's a fuel smell - you may be running rich for some reason which would also cause a drop in efficiency.

    Any recent maintenance/mods done?

    Fink[​IMG]
     
  14. Sep 4, 2011 at 11:29 PM
    #14
    Konaborne

    Konaborne Pineapples on pizza Hawaiian does not it make.

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    might be an exhaust leak, might be a dirty MAF, might be bad gas, might be you driving uphill and not noticing it- theres a bajillion different reasons that MIGHT be the cause-
    any good shops around?
     
  15. Sep 4, 2011 at 11:30 PM
    #15
    revolution

    revolution [OP] Member

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    it smells like fuel. no mods or fuel that recent. just the o2 sensor maby 6 months back
     
  16. Sep 4, 2011 at 11:31 PM
    #16
    ColtsTRD

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    Check your exhaust for leaks, clean you Mass Airflow Sensor (they sell electric spray cleaner specifically for this), change your oil and air filter :cool:
     
  17. Sep 4, 2011 at 11:36 PM
    #17
    revolution

    revolution [OP] Member

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    ya i cleaned my throttle body a few months back air filter and change oil on the regular. ill check for exhaust leaks. thanks everybody
     
  18. Sep 4, 2011 at 11:36 PM
    #18
    ColtsTRD

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    good luck man, keep us posted
     
  19. Sep 4, 2011 at 11:57 PM
    #19
    Fink

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    Just remember that the MAF is not the throttle body - you should still clean it. It only takes a few minutes.

    Let us know what you find out with the exhaust.

    Fink[​IMG]
     
  20. Sep 5, 2011 at 12:24 AM
    #20
    96Taco

    96Taco Well-Known Member

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    ..stay tuned
    Im happy if I get 20 MPG!
     
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