It should be! The O2 sensor should almost always be in control after the
engine is warmed up. The mixture is enriched for full throttle and the O2
sensor is ignored for 25 crank revolutions after closed throttle, ( fuel
cut-off), with the engine being over run such as when coming to a stop or
going down hill with the throttle closed.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Taeke Takeon
Sent: Friday, May 16, 2008 6:03 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: tested Oxygen Sensor, and...

O2 sensor isn't active at idle, or rather the lambda FI computer isn't
active.

On Fri, May 16, 2008 at 5:53 PM, pickle vanagon <greenvanagon@gmail.com>
wrote:

> Just for fun, I decided to go out and "test" my oxygen sensor today, by
> which I mean I warmed up the car, and then checked the voltage coming
off
> the sensor wire with the van at idle.  I got readings of around .52
volts,
> which maybe seems okay (?), but the voltage was steady, not oscillating
(it
> stayed between .51 and .53 volts always).  Does this mean my engine is
> never
> entering closed loop operation?  If so, what are the standard things to
> check, since the O2 sensor seems okay?
>
> Thanks,
> Wes
>