4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Rear O2 sensors needed or no????

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Old 05-03-2008, 08:42 AM
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blkthndr03
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Default Rear O2 sensors needed or no????

to make a long story short i installed an SLP catted x pipe and i had issues with it sealing and had to turn off the rear sensors because i was throwing a lean code. i got it all buttoned up tight now, should i turn the rear sensors back on or will having them off cause any problems??
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Old 05-03-2008, 09:03 AM
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Sxynerd
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Default RE: Rear O2 sensors needed or no????

Leave them off. they are only used for measuring not metering.
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Old 05-03-2008, 09:06 AM
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blkthndr03
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Default RE: Rear O2 sensors needed or no????

good enough for me theyll stay off
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Old 05-03-2008, 09:09 AM
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Default RE: Rear O2 sensors needed or no????

Also, if you ever get a wideband you wont have to mess with them again.
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