Date:         Fri, 25 Sep 2020 10:21:00 -0700
Reply-To:     al sinclair <alvanagon@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         al sinclair <alvanagon@GMAIL.COM>
Subject:      Re: '81 air-cooled engine stall (increase idle speed)
Comments: To: S DaRoota <sdaroota@gmail.com>
In-Reply-To:  <CADdfNsLOwiaVuhQQH9ELyg-_ALzvpQXPR0DZNSTFj31CdxYySQ@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

many thanks .. I'm unfortunately far from BD here in central California!

I'll follow up with the tests you suggested, though I don't have a head
temp gauge nor an air/fuel ratio sensor

Alan

On Wed, Sep 23, 2020 at 9:30 PM S DaRoota <sdaroota@gmail.com> wrote:

> Run a brake booster line check on the vacuum line from the engine to your
> brake booster.
>
> Smoke test the intake of the engine, make sure there's no leaks anywhere
> in the system
>
> Where abouts are you located?  I have the knowledge and tools to bandaid a
> fix if you are located in BC, canada.  Unless you have verified you have no
> vacuum leak, and also have a Air/Fuel ratio sensor, don't play with the
> insides of the Airflow meter.  (that's what I would test, if you have a
> Air/fuel sensor gauge)
>
> Do you have a Cylinder head temp gauge?  Are you running hot?  I'm
> thinking you are.
>
> On Wed, Sep 23, 2020 at 1:17 PM al sinclair <alvanagon@gmail.com> wrote:
>
>> Our '81 Vanagon (automatic transmission) tends to stall on accelerating
>> from idle, e.g moving off after sitting at a stop light. It's fine if I
>> keep the idle speed up a little with my foot on the accelerator. And while
>> moving there's a hesitation for well over a second when pressing the
>> accelerator after coasting before engine power kicks in - likely the same
>> issue.
>>
>> Is there another way to increase the idle speed besides turning the "idle
>> speed adjusting screw" (Bentley page 24.23)? turning that makes no
>> difference to the idle speed. I realize that's not addressing the actual
>> problem (of course it would be better to solve it) but increased idle
>> speed
>> would avoid the stalls.
>>
>> Any clues to solving the underlying issue would be great too, but I need
>> to
>> eliminate the stalls so my wife can drive the car.
>>
>> This is a different issue, because it's happened for years and the stall
>> issue is new, but noting it in case it's relevant: at speed if the
>> accelerator is pushed to the floor the engine hesitates, and only picks up
>> if I back off the throttle.
>>
>> thanks
>> Alan
>>
>