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Thread: Recently got bad gas mileage

  1. 07-05-2005, 11:25 AM #1
    xtmsports
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    Default Recently got bad gas mileage

    Hey guys, i just replaced my spark plugs and the alternator died out. Turns out that the voltage regulator was bad, so I got that replaced. Ever since I replaced the spark plugs and voltage regulator, I have gotten really bad gas mileage. About 250 freeway miles on a full tank of gas.

    Also, the air conditioner has not been very cold, could that affect the gas mileage that dramatically?

    Thanks.
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  2. 07-05-2005, 11:31 AM #2
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    632 Regal
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    AC will affect it some, shouldnt be dramatic tho. did you reboot after you were all done?
    95 E34 530I V2.37
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  3. 07-05-2005, 12:29 PM #3
    xtmsports
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    Quote Originally Posted by 632 Regal
    AC will affect it some, shouldnt be dramatic tho. did you reboot after you were all done?
    No I didn't reboot. How do I do that?

    The battery was completely dead, so I didn't think I needed to reset anything.
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  4. 07-05-2005, 12:48 PM #4
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    http://www.bimmer.info/forum/showthr...computer+reset

    maybe your trans is running 2 chutch packs at the same time from an electrical issue in the trans selonoids too.
    95 E34 530I V2.37
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  5. 07-05-2005, 12:59 PM #5
    DanH
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    What kind of spark plugs did you use? Some types will cause problems.
    DanH
    1989 535iA 254k Miles
    1992 535iM 330k Miles
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  6. 07-05-2005, 01:02 PM #6
    xtmsports
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    Quote Originally Posted by 632 Regal
    http://www.bimmer.info/forum/showthr...computer+reset

    maybe your trans is running 2 chutch packs at the same time from an electrical issue in the trans selonoids too.

    Hey Jeff,

    I don't understand what youmean by my trans running 2 clutch packs at the same time.

    Are you refering to my other post with the tranny running bad in reverse?

    Will reseting the computer possibly fix the tranny issue?

    Thanks.
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  7. 07-05-2005, 01:11 PM #7
    xtmsports
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    Quote Originally Posted by DanH
    What kind of spark plugs did you use? Some types will cause problems.
    I used the Bosch ones that I got from Autozone.
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  8. 07-05-2005, 01:15 PM #8
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    do the reset and hope for the best...it's not a cure all but you never can tell. yes i was combining your posts.

    Good luck!
    95 E34 530I V2.37
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  9. 07-05-2005, 01:17 PM #9
    dacoyote
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    What Model Bosch ones, not all Bosch plugs work right in the car, even ones that are suppost to work according to autozone or napa (Never Any Parts Anyway)

    -Charles
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  10. 07-05-2005, 01:45 PM #10
    xtmsports
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    Quote Originally Posted by 632 Regal
    do the reset and hope for the best...it's not a cure all but you never can tell. yes i was combining your posts.

    Good luck!

    After I do the reset, should I just drive the car smoothly for a while or run it hard?
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