93 S-4.....Flakey ignition coil?

Robert Myers rmyers at oak.total-web.net
Tue Aug 22 16:16:20 EDT 2000


Jorgen,

Agreed.  The "plug wire" (looks sorta like a black rubber cigar) or plugs 
are the most likely culprit.  However, I replaced all 5 plug wires and the 
miss under boost remained.  The next step was to swap each individual coil, 
one at a time, with a new coil.  I got lucky.  I swapped nuber 5 with no 
gain.  Swapping number 4 totally solved the problem.

It's great having my S6 back running right again.

At 02:57 PM 8/22/00, Jörgen Karlsson wrote:

>It is usually not the coil that is the problem, the coil is really made of
>two parts, the coil at the top and some kind of leader at the bottom. The
>bottom part usually fails, I heard this the other day from a guy at the
>track. They replaced the bottom parts on an S4 that had problems at high rpm
>and sometimes missed at idle. It solved it. I don't know any part #, for all
>five they payed $250 or something.
>
>Does anyone know more about this?
>
>Jörgen Karlsson
>Gothenburg, Sweden
>
>For sale:
>New K24-7000 turbo(S4), MC exhaust manifold, wastegate, downpipe.
>Used K26 turbo, MC exhaust manifold, wastegate, downpipe.
>
>
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Bob
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