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#1 (permalink) Old 07-04-2007, 11:55 AM
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O2 sensors

1994 530I auto

What are the downside issues when using an aftermarket 4-wire O2 sensor and splicing the wires to the BMW connectors?

The upside is about $200 more in my pocket for gas...

Anyone done this before?
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#2 (permalink) Old 07-08-2007, 09:20 PM
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My question, can someone with knowledge add to this posting please?
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#3 (permalink) Old 07-08-2007, 10:30 PM
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The down side of using these cheaper sensors is that you leave yourself open for connection problems due to soldering imperfections. The O2 signal runs at less than 1 volt (roughly .1-.9 volts) so it doesnt take a whole lot of resistance to corrupt the reading. Ive never tried using one of these because I have heard from several people that they cause problems. I cant honestly say this from experience because I only use OEM.

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