[s-cars] Ignition coil replacement

[Rit Bellis]

My original 1.8t coils made it 30,000 miles before 4 of 5 failed in one
week.  I've installed the latest version and will see how it goes.  The
engine revs much freer now than ever before, and the gas mileage is up
substantially.

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Tony Curran
Sent: Monday, March 09, 2009 4:18 PM
To: 'Eyvind E. Spangen'; s-car-list at audifans.com
Subject: Re: [s-cars] Ignition coil replacement

I went with Option #2 last October and have not experienced any failed coils
- carry a spare. I have used Apikol's cover which presses against each coil
and may act as a bit of a heat sink. I have also implemented the monster air
intake mod which replaces the air intake snorkel and the hole left behind
allows cool air to flow over the engine head and turbo - air runs at lower
temp across it (measured with a thermistor) by 3-4 degrees.

We'll see what happens in the summer!

Tony
96 86 with the cool coils!

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Eyvind E. Spangen
Sent: March 9, 2009 8:04 AM
To: s-car-list at audifans.com
Subject: [s-cars] Ignition coil replacement


The coil pack in my '94 S4 is going bad. It's missing under boost, but
during normal driving and moderate acceleration under some boost, it is
fine. Have tried with different POS'es - no difference, it's one or more
coils/coil wiring. Plugs and the "tubes" between the coils and plugs are
new.


I have found 5 solutions:

1. New OEM coils. Can be had for $120/piece. Expensive, and I still have the
dreaded POS'es that can fail. In the end almost as expensive as the 034 set,
and far less durable. Not an option.

2. 1.8T coil conversion. Less expensive, but I've read that the 1.8T coils
can't handle the heat under the coil cover very good. Is this really a
problem running just a chip on an otherwise stock engine?

3. Used coils off Ebay or something. Can work for many years, or they can
fail again in a few weeks. Impossible to say, and a possible waste of money.
Can be had pretty cheap, though..

4. 034 HO coil set. Technically the best solution, but the price is IMHO
horrible.

5. Replace the wires on my old coil pack and keep my fingers crossed that
the problems are caused by cracked insulation and not the coils. 


I'm considering trying #5 first, but does anyone have any BTDT on replacing
the worn wires - is it possible that it might help? I'm thinking that maybe
a failing wire would have caused a missing cylinder all the time, not only
under boost..

-- 
Regards,
E. Spangen


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