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Date:         Wed, 9 May 2001 10:35:31 -0700
Reply-To:     KI <ki@cloudfactory.org>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         KI <ki@cloudfactory.org>
Subject:      Re: soCal, Heat, Condensation, & Gasoline?
Comments: To: mike and shari <mjgarske@home.com>
In-Reply-To:  <3AF95D0C.EEF368F8@home.com>
Content-Type: TEXT/PLAIN; charset=US-ASCII

i was told recently by a mechanic to get an AD Harness. not sure if this is the same thing. it goes on the air meter as well i think. he said it just converts the analog signal to a much cleaner digital signal? said it would prevent the engine from stumbling. cost about $150.

ki

On Wed, 9 May 2001, mike and shari wrote:

> A few years ago in my "88 Wolfsburg I was on the road and mine began > stumbling. I pulled into a VW mechanic and he sold me a static diverter which > dirverted stray electrical charges from the air meter I believe. The real > kicker was that it was sold just as a normal VW part, (should have been part of > a recall). Anyway this 'wire harness' cost about $100 and took a chunk out of > my road burrito budget , I was really pi**ed. It solved my problem though. > > > > Mike G. > > '87 Syncaru > > > > > harald_nancy wrote: > > > Jeffrey, > > Your post was a good description of what happened to > > our '90 westy last time we drove to California from > > Washington state. > > Prior to entering California, our vanagon ran perfectly. > > As soon as we entered California, the vanagon made a > > couple of stumbles, but then ran ok again. > > By the time we got to Death Valley, the stumbling > > became totally annoying, and sometimes the engine > > would almost stop running, even backfiring. > > But then it would always start up again, and run ok > > for awhile. > > The vanagon always runs perfectly up here in Washington > > and Oregon on both mountains and flat, heat and cold. > > I was never able to duplicate the stumblings here. > > I spent 3 whole days in Death Valley, trying to > > figure out what was wrong with the vanagon. > > Things I tried: cleaned all grounds and connectors, > > checked ignition switch, interchanged a fuel pump with > > a spare that I had with me, changed the fuel filter, > > short-circuited fuel pump relay. I even bought a > > new distributor in a San Bernadino VW dealership, since > > one mechanic thought it was the Hall sensor. > > (the '90 westy has the hall sensor inside the distributor.) > > Changed spark plugs, distributor cap, and the vanagon > > has an almost new AFM. > > One theory was that maybe it was a clogged carbon cannister, > > from constant topping off with gasoline. > > Or maybe a vacuum in the gas tank? > > So I drove without the gas cap for a bit. > > Every time I did something, it seemed like I fixed it, because the > > vanagon would run well again for a time. > > But then later, the stumbling would start all over again. > > We decided to drive it back home to Washington state, > > despite the stumbling. > > When we reentered Oregon, the vanagon ran > > perfectly again, and has ever since up here. > > Some wild guesses: > > 1) my westy doesn't "like" California > > 2) Static buildup on the afm. > > 3) Mtbe, gas additive in California gasoline. > > 4) Ecu was getting "warm", perhaps bad solder connection in ecu. > > I put the capacitor in the AFM now, and sometime I'll have to take > > another trip to California to test it. How about a 1,000 mile test drive? > > Harald > > '90 westy > > ----- Original Message ----- > > From: "Jeffrey R" <Oxroad@aol.com> > > To: <vanagon@GERRY.VANAGON.COM> > > Sent: Tuesday, May 08, 2001 10:30 PM > > Subject: SoCal, Heat, Condensation, & Gasoline? > > > > > I'm fairly newly relocated to Burbank, CA in the SanFernando Valley (6 > > > months). I'm wondering if a problem with my bus can be due to climate > > > conditions and if there's an easy solution. > > > > > > The problem: > > > > > > Occasionally and very sporatically my bus will stumble as if for a moment > > > it's getting no fuel. Sometimes I'll be cruising at 3,000 RPMs and just > > get a > > > slight stumble as if I've taken my foot off the gas pedal momentarily. ( I > > > have a 4 speed manual trans). Sometime maybe with this scenario the RPMs >


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