Date:         Mon, 5 Jul 1999 10:30:40 -1000
Reply-To:     Peter Zendzian <peterz@HAWAII.RR.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Peter Zendzian <peterz@HAWAII.RR.COM>
Subject:      Re: 02 sensor life
Content-Type: text/plain; charset="iso-8859-1"

There is a detailed procedure in the arcives, but here's the abridged
version.  With everything hooked up except O2 sensor and timing set, cover
and small plug removed from top of AFM.  the small plug requires drilling.
I ran my engine at about 2000 rpm and adjusted the "dial" inside the AFM
clockwise until the voltage on the O2 sensor was less than .5v.  I then let
the van idle and adjusted the small allen screw found under the little plug
until the O2 sensor read less than .5v at idle.  I repeated this until I was
completely satisfied.  side note-- I'm still tweeking.  I think my AFM needs
to be replaced, all the tests fail and I think my temp sensor II is shot,
still have to test that one.  I still have slight hesitation and it is more
pronounced with the A/C on but it is much better than before.  I have
considered the engine swap, but the only engines that I have come across are
Audi 5 cyl and I am not convinced that spending $2000 on a kit is going to
make me happy.


----- Original Message -----
From: Coddington <coddington@PACIFIC.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, July 05, 1999 10:13 AM
Subject: Re: 02 sensor life


> Hi Peter, Please tell us how you adjusted your AFM to run leaner. We need
a
> step by step lesson.
> Thankyou, Tom in No. Calif.
>
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf
> > Of Peter Zendzian
> > Sent: Monday, July 05, 1999 11:28 AM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Re: 02 sensor life
> >
> >
> > >From my fumbelings, the hesitation comes from the fuel mixture
> > controlled by
> > the AFM.  I adjusted mine to run leaner and the hesitation went away.
> >
> > Pete
> > peterz@hawaii.rr.com
> >
> > ----- Original Message -----
> > From: j fritz <jfritz@DECORAH.K12.IA.US>
> > To: <vanagon@GERRY.VANAGON.COM>
> > Sent: Monday, July 05, 1999 7:54 AM
> > Subject: 02 sensor life
> >
> >
> > Volks,
> >
> > Gearing up for a 5000 mile trip but would like to raise the gas mileage
> > (16.5 mpg @65 mph) and eliminate the bogging down that occurs when
pulling
> > away from stop lights.  (Basically the pedal feels "dead" until you get
up
> > to about 2000 rpm and then there is a surge.  It is especially
> > bad with the
> > AC on.  People behind me swear and honk the horn....I don't
> > really care, but
> > it doesn't allow for the occassional "need to get up to speed
> > quickly" type
> > of getaway.)  The engine idles beautifully and starts great.  I've
> > occassionally noticed a slight surge at highway speeds but I
> > really think it
> > occurs when the AC pump is kicking on and off.
> >
> > Since I bought my 89 Westy last fall I've put in Bosch plat plugs, put
on
> > new Michelins MXTs, KYBs, a sway bar, changed fuel lines, oil/air/gas
> > filters, new Dansk muffler, switched all oil to synthetic and
> > flushed/changed to non-phosphate coolant.  My budget (and my wife's
> > patience) is running out :-)
> >
> > Many members have offered suggestions but before I spend the
> > bucks I have a
> > couple of questions:  My Westy has 57,000 miles on it.  I believe the O2
> > sensor light is due to come on at 60,000 and I know how to shut it off
BUT
> > does it also mean the sensor is probably shot too?  Since my maintenance
> > budget is running low I need to prioritize my remaining things to
> > do before
> > the trip.
> > I'd appreciate your input on what I should focus on to try to
> > eliminate the
> > bogging and the poor gas mileage.  Should it be #1 replace O2 sensor, #2
> > replace cap and rotor (I think the PO replaced the cap at some
> > prior time as
> > it looks newer/cleaner and the metal ring that goes around it to
eliminate
> > noise in the radio is now sitting in one of the rear cabinets), #3
replace
> > coil or plug wires, #4?????          I can afford to do some of this but
> > unless the list feels strongly, I'd rather not do it all at this time.
> > Your comments are greatly appreciated!!!!!!!
> >
> > Jim in Iowa
> > 91 Passat Wagon GL
> > 89 Westy
> > 66 Beetle
> >