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O2 sensor problem....HELP!!!!

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Old Apr 30, 2005 | 11:26 AM
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Unhappy O2 sensor problem....HELP!!!!

All,

I put on Pacesetter LT's, HiFlo Cats, and a 3 in Y pipe last November. For about a month now the check engine light has been coming on, Code P0157- O2 sensor 2 Bank 2 low voltage. Well, I replaced the damn thing twice and anywhere from 5 minutes to 30 minutes after driving away from the garage, the check engine light comes back on. I monitored the engine on my Diablo tuner this second time around and the voltage right off the bat just drops almost to zero.

Do I have a bad Cat or is it the O2 Sensor 1 Bank 2 that is screwing things up?

Thanks,
Ned
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Old Apr 30, 2005 | 11:44 AM
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i'd love to know too, because my car is getting pacesetter long tubes with a 3" ypipe and hi-flow cats as we speak...
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Old Apr 30, 2005 | 11:55 AM
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.........and YES I disconnected the battery before I did this.
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Old Apr 30, 2005 | 12:28 PM
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thats really wierd because mine work fine. The ses light i got was from removing my AIR. I know you loose voltage when you put underdrive pullys without an overdrive alternator but i dont think that has anything at all to do with the 02 stuff. Im sure someone will know though
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Old Apr 30, 2005 | 12:30 PM
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Check your wires and see if any are cut or burnt.
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Old Apr 30, 2005 | 04:10 PM
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I would like to know also because i just put my kooks on and having simialr problem. Im also getting a lean condition and a low idle warning
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