Vanagon Bogs when raining

[1971BugGuy]

Recently my van has developed symptoms very similar to Vanagon Syndrome but only when it is raining. The van will be running great and then it starts to rain. Very shortly after it begins to rain steadily the inevitable bucking and bogging that is commonly associated with the syndrome occurs. Turn off the ignition and turn it back on again and it corrects itself... but only for a minute or so... or until the rain stops. Any ideas anyone?
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Only a fool or a child would judge a project before it reaches its completion.


1971 Super Beetle
1986 Vanagon Westfalia Weekender

[Ahwahnee]

I recall that when my Vanagon used to experience the Syndrome it was more common in the rain. I thought perhaps it had something to do with the draw of the wipers & lights.

It also was more common when my wife was driving as she does not use cruise control and tended to maintain a very steady throttle.

Anyway, I did the capacitor fix and thus have no more data points on this. Costs about a buck to add that cap and certainly can't hurt to try it.

[dhaavers]

Maybe: Add a smear of dielectric grease inside your coil & plug boots.
Keeps your spark contained. Humidity can tend to "dampen" it a bit...
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86 White Westy Weekender
"The WonderVan"
<EDITED TO PROTECT INNOCENT PIXELS>

[BigNick0]

This is a common problem with a badly spliced oxygen-sensor wire. I suffered with this myself on a splice I did and eventually replaced it with a new sensor that had the proper connector.
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91 Carat 2.1

[sanchius]

[phlogiston]

try new ignition wires. the insulation can decay with time and it's no easy task containing that kind of voltage. i've fixed this exact problem on several vehicles with new wires.