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Date:         Thu, 8 Oct 1998 20:41:24 -0600
Reply-To:     BILL <billv2@PRODIGY.NET>
Sender:       Vanagon Mailing List <Vanagon@vanagon.com>
From:         BILL <billv2@PRODIGY.NET>
Subject:      Re: Stumbling problem solved
Comments: To: John Clavin <jjc@BGA.COM>, Vanagon@VANAGON.COM
Content-Type: text/plain; charset="iso-8859-1"

Check with Jim at the http://www.oldvolkshome.com and/or give him a call at 530-221-5342.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Bill '85 GL [*Magic*Bus*] '82 Westy [FreeBird] ...cause I'm as free as a bird now... Big Sky Country ---Ronnie Van Zant <>< ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-----Original Message----- From: John Clavin <jjc@BGA.COM> To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM> Date: Thursday, October 08, 1998 8:06 PM Subject: Stumbling problem solved

>I have been plagued with the infamous stumbling problem for several years >and believe I finally cured it. I tried all of the various suggestions >regarding temperature sensors, fuel injector cleaning, reseating >connectors, etc. Here's what finally isolated the problem and worked for me. > >I was suspicious of distributor/hall sensor/coil for some time because the >problem seemed to disappear for a while when I replaced the hall sensor >last year. However, it soon returned. Also, I noticed that it was >associated with various degrees of erractic behavior of the tach. I finally >discovered some corrosion on the plug which connects at the side of the >distributor to the hall sensor. This plug has three tension contacts which >are not one of VW's engineering triumphs. Each contact is a u-shaped jaw >shaped and tensioned to be a tight fit when the opposing pin slides into >it. The pins in the opposing socket do not enter it longitudinally, but are >positioned so that the contacts fit over then sideways. My description may >not be clear, but you will see what I mean by taking a look at the connector. > >The problem was that the tensioned contact was corroded and stressed, >thereby not making good contact. I cleaned the contact area with some 600 >emery paper and retensioned it by carefully persuading it with a dental >probe. This fix lasted from last fall until a few months ago when the >humidity here increased after being dry for most of the summer. The >stumbling problem returned in spades, but disappeared immediately upon >application of another treatment. I suspect that the emery paper has >removed any plating remaining on the contact making it more susceptable to >corrosion in the future. > >And, of course, this is a connector which cannot be obtained from the >dealer without being attached to a mega-dollar cable harness. If anyone has >any sources for this part, I would appreciate hearing. Thanks. > >********** John Clavin | jjc@bga.com | Austin, TX **********


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