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catalytic converters

This is a discussion on catalytic converters within the External Engine forums, part of the LSx Technical Help Section category; i have a 2000 ws6 and i cut the cats off now that annoying light went on the "service engine ...

  1. #1
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    pewter
    2000 pontiac trans am ws-

    catalytic converters

    i have a 2000 ws6 and i cut the cats off now that annoying light went on the "service engine soon" light how can i get the light to turn off i tried disconnecting the battery but the light turned back on after about 1 hour. Thank You!!!

  2. #2
    Impounded MikeSomething's Avatar
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    Pewter Metallic
    '00 Z/28

    Pick one:

    1) Put on highflow cats
    2) Tune it out the 02 codes it's causing using software (LS1edit, HPTuners etc.)
    3) Disconnect the rear 02 sensors and plug in 02 simms

  3. #3
    Member 180ls1's Avatar
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    1998 Firebird Formula WS6

    Quote Originally Posted by MikeSomething View Post
    Pick one:

    1) Put on highflow cats
    2) Tune it out the 02 codes it's causing using software (LS1edit, HPTuners etc.)
    3) Disconnect the rear 02 sensors and plug in 02 simms
    yup ^^^

  4. #4
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    I agree with above although some High flow cats will still throw your SES light.
    J
    2001 SS, Its not the car its the Driver that matters....

  5. #5
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    pewter
    2000 pontiac trans am ws-

    cat problems

    Quote Originally Posted by MikeSomething View Post
    Pick one:

    1) Put on highflow cats
    2) Tune it out the 02 codes it's causing using software (LS1edit, HPTuners etc.)
    3) Disconnect the rear 02 sensors and plug in 02 simms
    How do i tune out the 02 codes, what are 02 simms?

  6. #6
    Senior Member TransAm11973's Avatar
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    2000 Trans Am WS6

    O2 sims are O2 simulators. they mimic the voltage feedback that the o2's would send back to your computer. These are only good for the POST cat. o2's. they plug into the harness that your o2s go into. look to see if one of the sponsors sells them if not do a internet search, should run you about 100 buck i believe.

  7. #7
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    2000 TransAm

    Same question here, do we just find someone with a OBDII that can erase the codes for the converters cause I can pass emissions cause it keeps throwing the check engine code and my cats are just fine. Sorry for the jump in but my question is very similiar....

  8. #8
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    pewter
    2000 pontiac trans am ws-

    obd II

    Quote Originally Posted by caveblazin View Post
    Same question here, do we just find someone with a OBDII that can erase the codes for the converters cause I can pass emissions cause it keeps throwing the check engine code and my cats are just fine. Sorry for the jump in but my question is very similiar....
    who usually has a obdII that i can go to?

  9. #9
    Junior Member anuka's Avatar
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    black
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    Quote Originally Posted by caveblazin View Post
    Same question here, do we just find someone with a OBDII that can erase the codes for the converters cause I can pass emissions cause it keeps throwing the check engine code and my cats are just fine. Sorry for the jump in but my question is very similiar....
    baso=ically yes, you need someone with a scantool to erase codes, or disconnect the battery, but then PCM would need to relearn all strategy and readjust to your stile of driving.however, just erasing codes would not do any good, especially if its cats - the light would go back on as soon as you turn the key on and PCM run a monitor on cats and it fails.you will need 3 consecutive trips with monitor ready to clear the code. how about O2??you sure they are not the cause?sometimes rear O2 can cause code for cats

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