Date:         Sat, 8 Aug 2009 17:10:52 -0400
Reply-To:     Robert Stewart <robertmstewart@MAC.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Robert Stewart <robertmstewart@MAC.COM>
Subject:      Re: 1988 Rebuilt Engine Stumbling at various RPM levels
              2100-2300, 3400- 4000rpms
Comments: To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
In-Reply-To:  <033801ca1868$52afd180$6501a8c0@PROSPERITY>
Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

I had the mechanic set the timing according to Chris AKA
TentCentLife's (Samba user) process.

What do I look for the AFM?
How do I take the proper reading?
What should the numbers be?

Is there anything else I should be looking for?

R


On Aug 8, 2009, at 4:39 PM, Scott Daniel - Turbovans wrote:

> air flow meter is a good candidate.
> timing should at least be in the ball park of correct.  Too advanced
> initially isn't good.
>
> but the old sensors back in !
> Scott
>
>
> ----- Original Message -----
> From: "Robert Stewart" <robertmstewart@MAC.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Saturday, August 08, 2009 11:39 AM
> Subject: 1988 Rebuilt Engine Stumbling at various RPM levels
> 2100-2300,
> 3400- 4000rpms
>
>
>> I just got my Rebuilt Engine back in my automatic 88 wolfsburg. It's
>> been Stumbling at various RPM levels between 2100-2300rpm & 3400-
>> 4000
>> rpm's.
>>
>> It has good power through the band but if you are not pushing the
>> accelerator down and staying steady at any of the RPM ranges stated
>> above it will stumble once in a while, not continuously.
>>
>> The engine only has 100 miles on it so far. Mostly country road
>> driving with very little highway driving.
>>
>> It has a brand new bosch O2 sensor, all other sensors on the van are
>> new.
>>
>> New Fuel Lines, Injectors are 2 yrs old. New fuel in the tank, all
>> old
>> fuel in the tank was removed. All new fuel lines on the tank as well.
>> New Oil filter and Fuel Filter. Air Cleaner just cleaned.
>>
>> Any ideas of what I should be looking for?
>>
>> Could it be the advance timing on the engine?
>> Maybe it was set incorrectly?
>>
>> AFM problem?
>>
>> Thanks,
>> Robert
>> NY