Date: Sat, 23 Jan 2010 12:41:55 -0800
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: 1.9 Stumbles When Damp
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reply-type=response
fwiw, I've yet to have any issue ever with a Bosch distributor cap on a
waterboxer vanagon. ( Non-Bosch ones I replace automatically, even if new )
.
So for me......as long as it's a half decent Bosch dist cap, it's probably
not that.
but I would pursue ignition breakdown in the presence of moisture,
especially with the plug wires.
some of my low tech but often very effective tricks for testing spark plug
wires -
In TOTAL Darkness, watch the engine running, looking for tiny electrical
leaks, little flashes ....if you see any, the plug wires are leaking.
With the engine running .......spray a mist of water on the plug wires and
coil....any stumbling ..........you suspect the spark plug wires.
too large spark plug gaps could contribute to voltage leaking upstream of
the spark plugs.
and bosch parts ........that's what I only use.
I'll use NGK spark plugs say, but for cap, rotor, or wires, Bosch.
and ......there are plug wires better than Bosch ones - based on what a set
costs me, I figure they are ok, but not the best made in the world.
and even though all electrical contacts have been cleaned ........I'd do it
again , with electrical contact spray cleaner.
I'd want some extra components to swap in too............ecu, air flow meter
etc.
But mainly, I'd concentrate on ignition to start with.
oh...........spray everything down with WD-40.
Everywhere except inside the alternator.
I might even try it on the running, cold, stumbling engine.
I have seen an electrical 'not right' connection get instantly fixed with an
application of that magic juice.
and I find throttle switches off all the time, and I don't think I saw that
on the list, so check that.
'most' of the vanagons I encounter, have a non-working, or an incorrectly
adjusted throttle switch at idle.
Scott
----- Original Message -----
From: "Zoltan" <thewestyman@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, January 22, 2010 10:17 AM
Subject: Re: 1.9 Stumbles When Damp
> You said, you changed it, but for me most of the time it is the cap.
> Moisture inside connects the four edges that also maybe loaded with
> graphite
> from the center piece. It can eventually crack the cap also along the
> line
> where the "lightning" is travelling.
> Zoltan
>
> ----- Original Message -----
> From: "Walter Houle" <whoule@ECSCONTROLS.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Friday, January 22, 2010 7:40 AM
> Subject: 1.9 Stumbles When Damp
>
>
>> My 85 1.9 has had this problem for more than 2 years and I've never been
>> able to solve it. Its time to ask the experts. Whenever the van sits
>> overnight and its cool and damp out, it misfires until it warms up. It
>> idles fine, but won't rev under load without breaking up. When I say its
>> cool and damp, its the San Diego version, which means 50 degrees and 65%
>> RH. It doesn't matter if the van is in the garage or outside in the rain.
>> The problem is intermittent, which is one of the reasons that its been
>> around so long. Once the van gets fully up to temperature, the problem
>> vanishes and it runs fine until the next damp day, which usually is a few
>> weeks away. However, its finally getting worse, so its time to do
>> something about it.
>>
>> Over the past 2 years, some of the items that I replaced were the coil,
>> cap, rotor, plugs, plug wires, hall sender & connector, injectors, temp
>> sensor, and O2 sensor. I also have cleaned all ground connections and
>> cable connections at the ECU, AFM, idle stabilizer, etc. I have not dealt
>> with the last 3 items other than simple cleaning. Next 2 simple things
>> I'll check are the wire & connections for the temp and the O2 sensors.
>>
>> Any suggestions?
>>
>> Thanks,
>> Walter
>> 85 VAnagon 1.9
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