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Where did my gas mileage go?

Discussion in 'General Tech and Maintenance' started by projectxspeed, Jul 5, 2005.

  1. projectxspeed

    projectxspeed Senior Member

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    I let my mother borrow my civic for a couple weeks while her car was getting the transmission replaced. When I got it back I noticed that my gas mileage went down from 38 - 40 now down to 30 - 34. The spark plugs and wires are not even a year old, so I don't think they are the problem. Any other suggestions?
     
  2. Taco15

    Taco15 I wear stretchy pants VIP

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    dirty air filter, fuel filter,plug wire, just throwing things out there for ya
     
  3. formby

    formby learning in progress

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    i would say more in the fuel filter category....but?????
     
  4. projectxspeed

    projectxspeed Senior Member

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    Hmmm since the plugs and wires are new I doubt those. I checked the air filter and its still a beautiful K&N pink. Fuel filter good idea, I will look at that.
     
  5. reckedracing

    reckedracing TTIWWOP VIP

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    is your check engine light on?
    hows your tire pressure?
    drive around with lots of braking then stop and feel for a wheel thats hotter than normal = sticky caliper...

    all these things, plus the things mentiopned above can affect your mileage...
    what gas do you run, and what gas did she run?
    you can always fill up with 91, get the car warm and reset the ecu, then drive it again to get the ecu recalibrated to the 91 octane...
     
  6. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    cat could be on its way out
    O2 sensor could be on its way out

    both fall far out of their efficiency range long before they set off a check engine light
     
  7. MikeBergy

    MikeBergy Blah blah blah....

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    Your mom broke it.

    that is all
     
  8. Taco15

    Taco15 I wear stretchy pants VIP

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    funny but yet so common :lmao:
     
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