Date: Wed, 5 Nov 2008 21:56:26 -0900
Reply-To: Jeff Hartman <jeffreyleehartman@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jeff Hartman <jeffreyleehartman@GMAIL.COM>
Subject: Re: bucking at 2K rpm
In-Reply-To: <B9130C51-1D6C-41C9-8808-441FE3101DAB@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
I just solved my vanagon 2.1 L bucking problem through one of two cleaning
procedures last night. I used contact spray cleaner in the AFM (though the
inside looked absolutely pristine when I opened it) and the second was to
disassemble and clean some rust off the top alternator terminal. It had
reached the point that every time the engine temp gauge was half way to
operating temp the bucking, backfiring and stalling was chronic till the
engine reached the center of the temp light. It seems to have stopped
completely as of today. Also, my headlight beam was flickering constantly
at almost all rpms before cleaning the alternator contact. It now is very
steady except for an almost imperceptable flickering at idle. I must still
have a poor ground somewhere.
I know that many people swear by a diligent cleaning of vanagon grounds. I
have found one on the engine, and another on the firewall, and know there is
one major one somewhere on the differential (?) From some posts, it sounds
like there must be dozens of grounds that I haven't discovered. For me the
problem is that I need a really clear description of the location of each
ground. Is there something like that available? I couldn't find it in the
bently.
Thanks,
Jeff Hartman
Juneau, Alaska
86 vanagon 2.1 manual
On Mon, Nov 3, 2008 at 1:48 PM, Aaron <a.robinson.lists@gmail.com> wrote:
> I had an '85 manual that bucked almost every time I passed through the
> 2800 RPM mark. It ran fine everywhere else. After cleaning a lot of
> grounds, replacing old sensors etc, it turned that a new ECU fixed the
> issue completely.
>
> If you have one available (I bought mine for $50) it's a quick check
> that could save you a lot of time.
>
> - Aaron
>
>
> On Nov 3, 2008, at 9:30 AM, craig cowan wrote:
>
> Hello guys.My '85 is running so astonishingly well, i have nothing to
>> complain about except that it tend to buck a little at or just above
>> 2K rpm
>> if you hold it there for a considerable amount of time while the
>> engine's
>> warm. It's ONLY at the 2000-2200 RPM range though. I thought it was
>> the AFM,
>> but i put in a spare and the symptom is exactly the same. I don't
>> know that
>> the spare's any good, but the fact that the symptoms are exactly the
>> same
>> has me thinking that's not it. So what do you think? Temp 2? O2?
>> Throttle
>> Position Switches?
>> Any thoughts? I have really no running issues aside from that
>> bucking from
>> time to time at that specific RPM.
>>
>> -Craig
>> '85Westy
>>
>
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