[s-cars] STILL fighting ignition problem

[Michael Wakefield]

The V-6 uses only 3 coils, thus one POS. Each coil has two high tension 
wires, feeding two cylinders. Every time the coil fires, one of the 
sparks is "wasted", since that cylinder will not be on a compression 
stroke.
MIke Wakefield
93S4
97Cabriolet
On Nov 22, 2004, at 11:25 PM, <calvinlc at earthlink.net> wrote:

> Brian,
>
> Are you using the Bosch plugs?  I would start looking at POS's.  I 
> think you
> should have two for your V-6, right???  Unless they are...well, no 
> scratch
> that, that thought is impossible...are you sure you only have one?
> --Calvin
>
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com]On Behalf Of Brian Powell
> Sent: Monday, November 22, 2004 2:31 PM
> To: s-car-list at audifans.com
> Subject: [s-cars] STILL fighting ignition problem
>
>
> Thanks to all who responded last week on ways to test my coil packs.
> To revisit, I have hesitation (misfire) under boost. I have new plugs
> and coil boots. I tested the coils with the spark gap tester up to
> about the 42,000 volt mark and all coils sparked similarly (if
> sporadically) at that length (around 1"). I then tested the resistance
> of the coil packs themselves (thanks S. Eiche), and they are all
> within reason at ~13 MOhms.
>
> So, by both tests, all coils are performing similarly. Thus, what
> next? I look to the POS. Possibly, the POS isn't allowing enough
> through to create a spark? The POS failure has been reported to be bad
> under boost in rare cases.
>
> My wife has a 96 A4Q (12v V6) which has a POS (strange system: only
> one POS for the V6), but built by Hitachi not Bosch. The part number
> for the POS on the A4 and the POS for the S6 is the same, but, the S6
> has an "A" appended and (as I said) is made by Bosch. Both have a 3
> wire and 4 wire connectors with the same wiring layout.
>
> My first question is: can I swap in the A4 POS to use as a tester for
> the S6 without blowing the Hitachi?
>
> Second, any other suggestions for a high boost (20+ psi) misfire?
>
> Thanks in advance.
>
> --
> Cheers,
> Brian
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