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Subject:Re: Inconsistent stumbling on resume throttle..Was "vanagon syndrome?"
From:Neil N
Date:Wed, 25 Jun 2014 10:10:37 -0700

The 3 wires are:

positive, negative for O2 heater and "signal" (voltage output) to ECU.

I gather the O2 heater element provides a sort of "convenience"; it
heats up the O2 sensor so the engine management can get into closed
loop more quickly. On a single wire sensor, this would be done with
exhaust heat.

Neil.

On 6/25/14, Don Hanson <dhanson928@gmail.com> wrote:

>   Of the three coming FROM the O2 sensor (two white, one black) the black
> lead was almost completely broken...or maybe it was and just touching now
> and again...

--
Neil n

Blog: tubaneil.blogspot.ca

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http://tinyurl.com/d7gd5ej