Date: Fri, 30 Oct 1998 13:14:23 -0800
Reply-To: "David W. Palmerston" <DPalmerston@HELI-CAL.COM>
Sender: Vanagon Mailing List <vanagon@vanagon.com>
From: "David W. Palmerston" <DPalmerston@HELI-CAL.COM>
Subject: Re: Euro-Drive: 89 Volkswagen VANAGON, Hesitation
Content-Type: text/plain
What you are describing sounds very similar to a problem that would
occur on my 88 when I didn't have a tuneup recently. The mechanic
claimed to be doing nothing that would "fix" this sort of problem, but
it did, everytime I took it into his shop for a "tune" it would come out
and run nicely at startup for a few weeks...
My solution: The mechanic would add a bottle of Chevron "Techron" to my
gas which would clean the injectors and allow proper cold operation!
So, I've been using Techron (or more recently the Amway (ugh) additive)
to keep my injectors clean and no more problem... Your mileage may vary,
but this fixed my problems.....
I don't cotton for much in the Amway arena, but found that it did an
even better job than Techron for less money and the bottles last for 12
tankfuls each!
David W. Palmerston
VP Technology
Helical Products Company, Inc.
PO Box 1069
Santa Maria, CA 93456-1069
USA
TEL:(805)928-3851
FAX:(805)928-2369
NET:DPalmerston@Heli-Cal.com
http:www.heli-cal.com
1998 VW Passat GLS 1.8tms Windsor Blue/Grey
> -----Original Message-----
> From: Ari Ollikainen [mailto:Ari@OLTECO.COM]
> Sent: Friday, October 30, 1998 10:59 AM
> To: vanagon@VANAGON.COM
> Subject: Re: Euro-Drive: 89 Volkswagen VANAGON, Hesitation
>
>
> >Jim Hoard wrote:
> >
> >>
> >> 1989 Volkswagen VANAGON 2.1 L
> >>
> >> Trans: Standard
> >> Mileage: 100,960 miles
> >> VIN: WV2YB0251KH072546
> >>
> >> Symptoms: Hesitation
> >> Occurs: Cold
> >>
> >> ____________________________________________________________
> >>
> >> We have performed all sensor checks and point to point
> >> engine harness checks i.a.w. Bently manual. We have
> >> substituted good computer, air flow meter and idle
> >> stabilizer with no change in results. The vehicle when cold
> >> has periods of hesitation up to ten seconds in length when
> >> accelerator pedal is held down. It does not stall but has
> >> near idle power. It is as if your foot is off the gas. When
> >> it comes to life it has full power. This event sometimes
> >> happens several times during warmup. Sometimes it does not
> >> happen at all. It never hesitates more than a second when
> >> warm. Fuel pressure is normal during hesitation. Thanks for
> >> any help.
> >>
>
> The very same thing happens with my '91 Vanagon camper!
>
> When it occurs, it's always within the first 5 minutes
> of a cold start AND generally occurs when accelerating after
> a stop or after idling in traffic. My belief is that
> it's somehow
> caused by a combination of *bad* values from the
> oxygen sensor AND
> one of the temperature sensors.
>
>
>
>
>
>
> OLTECO Ari Ollikainen
> P.O. BOX 3688 Networking Technology and Architecture
> Stanford, CA Ari@OLTECO.com
> 94309-3688 415.517.3519
>
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