Date: Wed, 9 Feb 2000 21:06:02 -0800
Reply-To: Kirk Persing <persing@SJ.BIGGER.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Kirk Persing <persing@SJ.BIGGER.NET>
Subject: Re: 87 Van Bucking (Solution...?)
Content-Type: text/plain; charset=us-ascii
I have a sismilar problem with my 84,I replaced all sensors,and the harness you
are speaking to stabilize voltage.The harness worked for a week then went back
to the irratic performance like before.
I am still in limbo on this one,I have spent a lot of time on it.
Hope the harness helps you,I know it has helped some people out.
Kirk Persing
84 GL
Steven Shane wrote:
> Greetings Volks! Steve from Columbus here. My beloved 87 Westy is in the
> shop getting new head seals, muffler, etc.... And I was talking to the
> Mechanic ("Eric" a very knowledgeable Vanagon guy) and he said that the
> solution to the infamous Vanagon "BUCKING" problem is not a big deal at all.
>
> For details on the infamous Vanagon "BUCKING" problem, see Ken's email from
> Jan 7th below.
>
> Anyway, the problem is not that uncommon and it can be resolved by a small
> device issued from VW specifically for this problem. Eric, my mechanic was
> telling me there is even a TECHNOTE issued from VW about this problem and
> device, so maybe someone with pull can find this Doc and post the juicy bits
> to the list.
>
> Anyway, this electronic device (estimated around $80 - $100) inserts between
> the air regulator and the female switch that used to plug into the air
> regulator. It's right on top of the air box and anyone can install it.
> (Yea, I know... sounds too good to be true!!) :^)
>
> Apearently, what it does, if the signal become irratic (which causes the
> bucking) this device snooths out the signal thus keeping the air flow
> regulated. (Man I'm a hack)
>
> I apologize for my lack of specifics on it, but I am no mechanic. I write
> code for a living. But I do believe this device to be true, and instructed
> Eric to put one on my beloved Westy. There is nothing more frustrating than
> the infamous Vanagon "BUCKING" problem. (Those of you who have it
> UNDERSTAND!!!)
>
> Anyway, I extend an invitation to anyone more knowledgeable than I on this
> issue to please please please take a few moments and write to the group
> about it's validity. Your contribution will make so many of us happy.
>
> Thanks in advance my friends!
> Steve from Columbus.
> mailto:s.shane@pobox.com
>
> ------
> Ken's Original Post
> ------
>
> Date: Fri, 7 Jan 2000 11:12:11 EST
> From: KENWILFY@AOL.COM
> Subject: Van Bucking (Ideas?)
>
> As you might have read in my earlier post I am having a problem with my van
> bucking at highway speeds. The symptoms are:
> When cruising at around 70 mph van runs smooth.
> If you let off of the throttle to maintain speed it starts to buck.
> If you let off of the throttle completely the bucking stops.
> If you press the throttle again you can go through an area where it bucks
> and
> then you will be accelerating smoothly again.
>
> This all started after replacing my stock muffler with an aftermarket, but
> high quality, "Danske" muffler. Now the exhaust note sounds funny like a
> hiss.
> After this the van wouldn't idle. I found that the idle switch wasn't
> closing when the van went back to idle (had to give the throttle linkage a
> nudge to get it to move back far enough to click the switch). I lubed and
> cleaned the throttle body but it didn't help. So I adjusted the switch
> position so that when the throttle closed it clicked the switch. Now I have
> idle (a little higher than before) but after this the bucking started.
>
> I have also replaced:
> Oxygen Sensor
> Coolant Temp sensor (blue)
> Distributor Cap
> Rotor
> Spark Plug Wires
> Spark Plugs (Plus 4 Platinum)
>
> I just checked the Temp sender in the AFM and the values weren't right. I
> am
> going to replace this next to see if it helps. Any ideas or similar
> experiences?
>
> ---------
> END
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