Good to know about the post 2.1 WBX being a 3 wire, but I'll go with
the Jetta sensor.

Thanks!

Neil.

On Sun, Feb 24, 2008 at 7:52 PM, Scott Daniel - Shazam
<scottdaniel@turbovans.com> wrote:
> A 3 wire 02 sensor for a 86 and later 2.1 waterboxer vanagon should be fine
>  if that's more convenient.
>  If you get it OE style complete with connector plug it's a bit spendy, I
>  imagine the jetta one is the same except for wire length perhaps, or they
>  even come 'extra long' so they'll fit many vw applications.
>  You can get generic splice-in 3 wire oxygen sensors for 40ish or so.
>
>
>
>
>
>  -----Original Message-----
>  From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
>  neil N
>
> Sent: Sunday, February 24, 2008 6:51 PM
>  To: vanagon@GERRY.VANAGON.COM
>  Subject: Re: Bentley wiring diagram. Questions on how to read.
>
>
>
> Actually I don't have the O2 sensor...... yet.
>
>  Is there a compelling reason to use the stock WBX O2 sensor? Less money?
>
>  I know *less* about the Jetta system, and even less about the WBX.
>
>  Neil.
>
>
>
>
>  On Sun, Feb 24, 2008 at 2:57 PM, Mark Drillock <mdrillock@cox.net> wrote:
>  > I don't know much about the Jetta system other than what I may read in
>  >  my 93-99 Jetta Bentley. Since he has it I don't see any reason not to
>  >  use the stock HO2S relay in it's stock wiring configuration between the
>  >  ECU and sensor. If he did not have it I would try wiring the O2 heater
>  >  like later 2.1 waterboxer models, from the FP relay.
>  >
>  >  Mark
>  >
>  >
>  >
>  >  Scott Daniel - Shazam wrote:
>  >  > I have a question for you.
>  >  > On this vehicle we're talking about here, 93 or 94 Jetta with ABA 2.0
>  >  > engine...........on the HO2S  ( heated oxygen sensor )  Control Module,
>  >  > there is a wire from that module to the ECU.
>  >  > So evidently, or possibly, the ECU is involved in whether or no 02 heat
>  is
>  >  > on or not.
>  >  >
>  >  > On a vanagon or a subaru the oxygen sensor/s get their heat circuit
>  >  > energized anytime the key is on, i.e. whenever the ecu is powered up.
>  In
>  >  > other words 'full time' regardless.
>  >  >
>  >  > So my question is, what to do you think this connection is about ?
>  >  > My guess it that perhaps the ecu tells the H02S Module to heat the 02
>  >  > sensors for the first say 15 minutes of running, and then doesn't have
>  it
>  >  > get heat power unless the 02 sensor cools down too much at another
>  period in
>  >  > that drive cycle.
>  >  > Any thoughts on that ?
>  >  >
>  >  > And also..........I 'would imagine' that if I wired one so it got
>  'regular
>  >  > 02 heat' through a normal relay , that the ECU would set a code perhaps
>  from
>  >  > not being able to 'see' that control module for 02 heat.
>  >  > Any thoughts on that ?
>  >  > Thanx,
>  >  > Scott
>  >  > Turbovans.
>  >  >
>  >  >
>  >  >
>  >
>
>
>
>  --
>  Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"
>
>  http://web.mac.com/tubaneil
>  http://tubaneil.googlepages.com/
>
>

--
Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"

http://web.mac.com/tubaneil
http://tubaneil.googlepages.com/