O2 sensor

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Apr 16, 2012 | 10:51 PM

numskull223

Thread Starter

2nd Gear member

Joined: Sep 2007

Posts: 384

From: SC

O2 sensor

I have a 4 wire o2 sensors on my z, How can I tell which one is the signal wire?

Last edited by numskull223; Apr 17, 2012 at 04:43 PM.

Apr 17, 2012 | 06:20 PM

Catmaigne

2nd Gear member

Joined: Apr 2011

Posts: 499

From: Philadelphia, Pennsylvania

Upstreams...
OEM Delco sensors have a + signal wire that is purple
Replacement Bosch sensors have a + signal wire that is black

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