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got fuel pump replaced, now gas mileage is crap

This is a discussion on got fuel pump replaced, now gas mileage is crap within the General Help forums, part of the LSx Technical Help Section category; car was having trouble starting so took it to dealer and they replaced fuel pump, problem fixed. well now i ...

  1. #1
    Junior Member
    Join Date
    Oct 2005
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    houston, tx
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    31
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    Black
    1999 Camaro SS

    got fuel pump replaced, now gas mileage is crap

    car was having trouble starting so took it to dealer and they replaced fuel pump, problem fixed. well now i notice i am getting 12-13 mpg. i've never gone below 16mpg even in the summer with the ac on. could this be related to them doing something wrong when installing the fuel pump? thanks.

  2. #2
    Lurking MechanicalMehem's Avatar
    Join Date
    Feb 2006
    Location
    Oklahoma
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    35
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    255

    white/black
    2000 z28

    no, it wouldnt be, all they do is unplug stuff and plug it back in(also unbolt and reinstall)....

  3. #3
    Senior Member SeVeReDiStOrTiOn's Avatar
    Join Date
    Aug 2005
    Location
    Roseville, CA
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    8,164

    05 Wrangler
    00 Z28 sold :-(

    Did they flash the pcm while it was in...sometimes they do that without asking

  4. #4
    Impounded
    Join Date
    Feb 2007
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    Pa
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    276

    Red
    99 TA

    have the fuel pressure checked,if its too high mileage will be poor.

  5. #5
    Junior Member
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    houston, tx
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    1999 Camaro SS

    i will do that. they shouldn't charge me the 75 fee to look the car over since they already charged me up the ass to replace the fuel pump, right?

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