Solved my bad MPG

Discussion in 'Gen 2 Prius Fuel Economy' started by JC91006, Nov 13, 2017.

  1. audiodave

    audiodave Member

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    Cleaning the maf sensor and throttle body could change things too.

    Posted via the PriusChat mobile app.
     
  2. JC91006

    JC91006 Senior Member

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    My car's mpg is still not up to where my other gen2 cars are at, I'm going to swap the MAF sensor from my 50mpg gen2 and see if anything changes.
     
  3. Mendel Leisk

    Mendel Leisk Lapsed Cargo Cultist

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    Are they the same physically? Interesting. Hopefully same internally as well.
     
  4. JC91006

    JC91006 Senior Member

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    Both are identical, 2005 package 2.

    The lower mileage one is the one with the lower mpg. Only 113000 miles. The one with 190000 gets 50mpg
     
    Mendel Leisk likes this.
  5. JC91006

    JC91006 Senior Member

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    Swapped the MAF sensors today. Initial test drives were very positive, low 50mpg on both cars. Now this is strange....

    I'll drive them for a week and see what happens after a few hundred miles.
     
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  6. audiodave

    audiodave Member

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    I changed mine and it didn't help. Got the best mileage with a dirty air filter, dirty t body and old sensor. Lol
    235,000 miles.

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  7. audiodave

    audiodave Member

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    I suspect if you had reset the computer it just needs time to settle to low 40's mpg again.
    I'm ready to change my injectors and O2 sensor. Low 40's is alI get.

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  8. audiodave

    audiodave Member

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    Maybe that upstream o2 sensor is a little off. Thinking of changing mine. I'm sure it's efficiency is off after 236,000 miles.

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    SFO likes this.
  9. milestoempty

    milestoempty Junior Member

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    Watching this...

    Just replaced the 12v battery in my car 2 months ago. Two weeks ago I did an oil change, air filter, and cleaned the MAF (111k) and now Im averaging 43k miles down from 49. Replaced my plugs about 20k miles ago.
     
  10. JC91006

    JC91006 Senior Member

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    How's your tires and alignment?
     
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  11. audiodave

    audiodave Member

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    How many tanks of gas have you ran through? Assuming computer was reset.

    Posted via the PriusChat mobile app.
     
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