[T3] Mystery Fix...solved

[Jim Adney]

On 29 Jan 2013 at 14:33, J. Jonik wrote:

> The "Mystery Fix" to the problem of stalling just after starting seems
> to be solved.  No need to try different fuel pumps or relays, etc. 
> The villain was a hidden break in one of the three wires to the plug
> for the trigger contacts.  The break was covered from sight by some
> shrink wrap from a repair a year or so ago. 

Well, that will certainly stop the FI. Glad you found it.  

> This is Old Car Syndrome...as so many wires have become as hard as
> some of our arteries, and as brittle as our bones.    All three of
> those Trigger Point wires are white...indistinguishable.   If one were
> to, say, put in fresh new wires (to last another 40 years), going back
> to at least outside the hot, oily engine compartment,  how to assure
> that the exact right wire goes to the exact right place in the plug?  

There should be black printed numbers near the end of each wire. 
Those correspond to the contact number on the brain connector that 
the wire runs to. The Bentley manuals have wire diagrams for most of 
the FI wiring harness versions, but you have to be able to decipher 
them.

> Related:  A shop owner mechanic who used to work on regular REAL VW's
> said that if one soaks a dry fuel pump before installing, it only need
> be for over-night, and it could be soaked in diesel, kerosene, or
> heating oil.  

For most cases that I've dealt with, that does nothing at all, but 
there's absolutely no harm in it. The worst thing is that you will 
probably spend a fair amount of time installing a pump that will 
promptly empty the gas tank onto the ground, via dried out and 
shrunken O-rings that no longer seal.


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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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