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service engine light

This is a discussion on service engine light within the General Help forums, part of the LSx Technical Help Section category; thing is that only under high accel. it comes on checked the codes an this is what came up PO131 ...

  1. #1
    Junior Member
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    white
    1998 z28

    Angry service engine light

    thing is that only under high accel. it comes on checked the codes an this is what came up
    PO131 o2 circuit b1 s1
    PO151 o2 circuit b2 s1
    PO137 o2 circuit b1 s2
    PO157 o2 crcuit b2 s2
    it drives me nuts when i race somebody then a damm light comes on dont know if its the sensor or maf

  2. #2
    Senior Member Orcus79's Avatar
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    black
    2002 WS6

    to have all four codes pop up, chances are its the maf, or the cats are clogged and restricting flow enough to create some funky readings.

  3. #3
    NY Representative basballny2's Avatar
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    Red
    2001 ws6

    does the car bog down at all? loss of hp? car hesitate? If so, MAf

  4. #4
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    white
    1998 z28

    nope no bogging or nuthing but dont smell any burt eggs like when a cat gos bad

  5. #5
    NY Representative basballny2's Avatar
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    Red
    2001 ws6

    and this is only under hard acceleration?

  6. #6
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    white
    1998 z28

    yes only under hard acceleration but only at a certain speed it weird i was racing this sti on the i95 the other day im crusing at 60 and he fly by so i punch it blew by him hit bout 130 them bam light came on .....hehe hehe the 4 banger couldnt keep up so i wasnt worried bout the ses but just wondering if you guys good give me any idea's

  7. #7
    Member Red99TA's Avatar
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    Red
    1999 Trans Am

    try cleaning the maf first, any auto parts store should carry cleaner, cheapest and fastest way to start

  8. #8
    Junior Member ricefordiner's Avatar
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    black
    00 camaro Z28

    wow dude same exact thing happend to me dude! but until i get cash i cant really try anything suks fat ass!

  9. #9
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    it almost sounds like you're going extremely lean or you have a harness/ground issue. I wouldn't be doing wot runs until you get it figured out though or at least see where your afr is.

  10. #10
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    white
    1998 z28

    really i should just have it tuned out cause that light drives me nuts......but my bro has hp turner and i checked it but i forgot what the feeding was but worst case i will clean the maf out first cause i was going to get longtubes anyway and different y pipe......its weird but hey it happens damm o2 sensors and other crap dammit

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