Date: Wed, 27 Jul 2022 22:50:17 -0500
Reply-To: Jeff Palmer <w.jeff.palmer@ICLOUD.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jeff Palmer <w.jeff.palmer@ICLOUD.COM>
Subject: Re: Fast idle and stumble
In-Reply-To: <8902225A-7917-4831-BDA5-55315A7504B9@comcast.net>
Content-Type: text/plain; charset=utf-8
So what exactly does the idle stabilizer do?
Jeff
> On Jul 27, 2022, at 9:06 PM, OlRivrRat <OlRivrRat@COMCAST.NET> wrote:
>
> I’m pretty darned sure that the reason that DHs prediction was correct is that if any 1 of the
>
> sensors that the ECU gets data from for Fuel Management is disconnected the ECU will go into Open Loop
>
> & ignore all or most Fuel Management Sensor Data ~
>
> Disclaimer > Not Absolutely sure due to 77Yr Old Brain ~
>
>
>
>> On 27 Jul , 2022, at 10:09 AM, Eric Caron <ericcaron96@COMCAST.NET> wrote:
>>
>> Hi Dave,
>>
>> Sadly that is well known as a unlikely cure. The sensor tested out fine. But due to a needed muffler a new one went in. It also tests out perfectly.
>>
>> Interestingly, Dennis predicted this would be the case and that it would be something else in the system.
>>
>> It will be so interesting and satisfying to solve this mystery.
>>
>> Keep the tips coming.
>>
>> Eric Caron
>> 84 2.3 GW with 1.9 fuel management
>>
>>
>>
>>> On Jul 27, 2022, at 11:57 AM, David McNeely <davmcneely40@GMAIL.COM> wrote:
>>>
>>> So if the problem only manifests itself with the O2 sensor plugged in, put
>>> in a new O2 sensor.
>>>
>>> On Wed, Jul 27, 2022 at 6:23 AM Eric Caron <ericcaron96@comcast.net> wrote:
>>>
>>>> Hi collective mechanical mind.
>>>>
>>>> Reporting back still not solved running issue on 2.3 with 1.9 fuel
>>>> management.
>>>>
>>>> Many steps still not done as friends are busy and summer is full of
>>>> activities.
>>>>
>>>> Issue is still.
>>>>
>>>> Van idles high.
>>>> Screw for idle control closed to max.
>>>> Checked for vacuum leaks and not finding them.
>>>> Tried to check timing but idle too high about 1,000 rpm and now and then a
>>>> surge to 1,200 RPM .
>>>>
>>>> Engine stumbles only when O2 plugged in and engine warm. From a stop
>>>> press excellerator and 2 out of three times it will hesitate stumble or
>>>> skip. Then find itself and go. No O2 and it seems fine.
>>>>
>>>> Still need to try a friends ECU
>>>>
>>>> I’m hoping to soon have most of a recently working 1.9 ignition system to
>>>> have for testing and spares. I know diagnostics is better but still having
>>>> working spares will make maintaining the old system easier.
>>>>
>>>> I don’t need it to be perfect but this skip and running rich needs to be
>>>> resolved.
>>>>
>>>> Other then this van is currently ready for a long distance trip.
>>>> I recently discovered that a long term friend from bus events has a twin
>>>> to my van, year, color, and even the engine and fuel management. Currently
>>>> enjoying a trip up and down the east coast. This gives me hope for a good
>>>> running van in the future.
>>>>
>>>> Any additional tips are always appreciated.
>>>>
>>>> Eric Caron
>>>>
>>>> 84 GW 2.3 with 1.9 fuel management
>>>>
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