Date: Thu, 24 Nov 2011 13:30:43 -0500
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Need instructions on field R&R of AFM '84 1.9L Van down
In-Reply-To: <6612B826-7D1F-4498-BE8E-B7EEBD5648E2@comcast.net>
Content-Type: text/plain; charset="US-ASCII"
Gasoline supplies have really gotten good with the double wall fiberglass
tanks and present delivery procedures. Clogged fuel filters are a symptom of
a tank going bad or road dirt and whatever getting through the breather
system.
Being an 83 you only have the small filter before the fuel pump. 86 and
later use a much larger and finer filtering filter after the pump. As fuel
is quickly recirculated through the system this second filter does a much
better job of keeping the fuel lean. It can be added and this may help
prevent the clogging of the pre-pump filter. The later vans do not use a pre
pump filter as when it does start to restrict it causes cavitation and vapor
lock issues.
For the hard cold start you need to check the temp 2 sensor-wiring. A bad
connection here makes the ECU think the engine is much colder than it really
is and will make for a very rich mixture. It will start as the extra fuel
will just puddle but as soon as there is any heat in the head that excess
will vaporize and stall the engine. It will then make restart very
difficult. Bad injector spray patterns can have similar effects.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Tom Torrella
Sent: Thursday, November 24, 2011 12:37 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Need instructions on field R&R of AFM '84 1.9L Van down
Happy Thanksgiving Y'all!
i have an 83 Westie, 1.9L water-cooled with about 6k miles after rebuild.
It would run rough, stutter & lose power. Just had a similar problem last
week running north on I-95 to MisThanksgivings in Awendaw, SC, pulled into
gas station as it totally stalled @ a fuel pump. After several unsuccessful
attempts to restart after filling up (10gal) we pushed off to the side.
Motor cranks just no firing, no idling. While waiting over an hour for
helpful calls I decided to change the fuel filter. VAROOM! Started right up!
Took several stops to find another filter. (keep one in case & fuel pump)
Now, my new problem - hard cold starts. Starts, idles, stalls. Any attempts
to press accelerator floods, misfires, stalls. The colder weather the worse
the issue. After several minutes it warms up and runs fine. Looks like all
vacuum lines are attached, no leaks heard, any ideas? Besides staying down
south!
On Nov 23, 2011, at 4:09 PM, jhlauterbach <jhlauterbach@BELLSOUTH.NET>
wrote:
> Hello Jim,
>
> Thank you for the suggestion. I have spare ECU with me. Will try in
> the morning. My FL home in a quiet neighborhood and garage lighting not
the best.
>
> John
>
>
>
>
>
> ________________________________
> From: Old Volks Home <oldvolkshome@GMAIL.COM>
> To: vanagon@GERRY.VANAGON.COM
> Sent: Wed, November 23, 2011 2:59:53 PM
> Subject: Re: Need instructions on field R&R of AFM '84 1.9L Van down
>
> John -
>
> I had a similar problem with my 84 Westy several years ago on a cross
> country trip coming back from Tennessee to Southern California. From
> the Oklahoma line to Adrian, TX on I-40. I stopped in Adrian to
> refuel and swapped the ECU. Fixed the problem, it was a worn-out or
> bad ECU. Always carry a spare ECU and AFM, along with a bunch of
> other spare stuff under the rear seatbox when traveling and full-time
> living in my Westy. Sent the ECU to Python to fix, reinstalled it,
> put the spare back in the seatbox. Now that I'm running the "F"
> European ECU (bought from the late Boston Bob) for the past few years,
> I've kept the original rebuilt in the seatbox as a spare. Never know
> when yer gonna need it.
>
> Tested AFM, it was fine, but I keep a spare re-man as well.
> --
> Jim Thompson
> 84 GL 1.9 "Gloria"
> 84 Westfalia 2.1 "Ole Putt"
> 72 411 Station Wagon "Pug"
> 75 914 1.8 "Nancy"
> Full Timing Since March 1999
> oldvolkshome@gmail.com
> http://www.oldvolkshome.com
> Find me on Facebook:
> http://www.facebook.com/people/Jim-Thompson/100000710343835
> ***********************************
>
> On Wed, Nov 23, 2011 at 7:13 AM, jhlauterbach
> <jhlauterbach@bellsouth.net> wrote:
>> I barely made it to my Florida home last night. Started out from
>> Macon,GA, where van had been running "like new." About forty miles
>> down I-75 van had of-and-on moments all the way to Valdosta (about
>> 150 miles). Van was idling rough but evened out after I filled the
>> tank. Went next fifty or so miles but then performance got erratic,
>> especially when going up hills. Finally made it to north side of
>> Ocala and van would not idle when I got off I-75. Refilled tank and
>> made it across FL 40 and down US 17 to my home and into with only having
to stop at one light.
>>
>> I suspect AFM. My office is sending me my spare so it gets here
>> Friday morning. In the meantime, need to see if I can repair the one
>> I have. Need instructions on how to get top off AFM so I can clean
>> contacts and make sure wires to connector are tight.
>>
>> Thank you,
>>
>> John
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