For the record, my O2 sensor cycles at 126 beats per minute according to
my metronome. That's 2 cycles per second in a 1.9L @ 3000 rpm.

--
Mike "Rocket J Squirrel" Elliott
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
Bend, OR
KG6RCR

On 5/9/2009 5:50 AM Ken Lewis wrote:

> David,
>
> I definitely would not call it "lazy". Maybe two or three cycles per
> second.
>
> For experimentation, I have the O2 sensor output sent to the front of the
> vehicle, through a switch, then back to the ECU. The other day while
> driving
> I noticed  the O2 monitor was acting as you described. You guessed it, the
> switch was open! As soon as I closed the circuit the display started
> toggling rapidly. FWIW I had been driving for twenty minutes and had NOT
> noticed any difference in performance. YMMV.
>
> Ken Lewis
> http://neksiwel.20m.com/
> in statu viae
> ----- Original Message -----
> From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Wednesday, May 06, 2009 6:38 PM
> Subject: [VANAGON] O2 sensor transition time
>
>
>> Running an '89 2.1l -- how fast should the O2 sensor change
>> states?  I don't mean how often, but literally how rapidly at say
>> 3,000 rpm to go from .7v to 0 or the other way on Ken's little
>> gizmo.  Mine seems kinda lazy to me, but it's been a long time since
>> I've seen a new one running.
>>
>> Thanks,
>>
>>  --
>> David Beierl - Providence RI USA --
>> http://pws.prserv.net/synergy/Vanagon/
>> '89 Po' White Star "Scamp"
>>
>