1990 240sx Disconnect battery when changing O2 sensor?

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lbrowne
Posts: 1520
Joined: Sat Dec 14, 2002 9:12 am
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I didn't when I changed my factory O2 sensor out, should I have?

If you say yes I want to know why. And no cop out answers like "you should when you work on the motor"

Would it really make a difference? Remember, this is OBD1 ...

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180fan
Posts: 7799
Joined: Sat Dec 14, 2002 12:16 pm
Car: 89 fastback

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don't sweat it.
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wrenched_1
Posts: 34
Joined: Thu Feb 22, 2007 9:09 pm
Car: 89' VW Jetta, 94' BMW 325is, 95' Nissan Altima

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not a big deal.

BUT... (here comes the cop out)

you are suppose to when you work on the electrical system to help prevent surges that could fry modules, sensors, or fuses.
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