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Subject:Re: When the O2 sensor cools down...
From:David Beierl
Date:Fri, 29 Aug 2008 20:58:07 -0400
At 08:43 PM 8/29/2008 -0400, pickle vanagon wrote:
>Usually during engine braking it shows 0 volts for me.  Once the sensor has
>cooled, it needle starts to drift up towards center (.5 volts).  It then
>stays around .5 volts no matter what your doing until the sensor warms up
>again.

Right -- that's the ECU driving the sensor.  When the sensor comes
back to life its signal overpowers the ECU's constant half-volt.

--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage," '85 GL "Poor Relation"