[A4] Coil Pack Help

Mitchell Segal MSegal at nsbgroup.com
Wed Jul 6 09:15:51 EDT 2005

Hellow everyone,
I've been following this discussion about coil packs, and now someone
mentioned the ICM as a possible cause to their problems.  I was wondering if
someone can tell me how to test the ICM, to see if it's the cause of my

I have a 2001.5 1.8TQ, and I have an occasional stumbling/stalling/loss of
power.  It's not constant, which is the biggest problem, because it never
happens when you're at the dealer to show them.  Shows up most after the hot
car has sat for 30-60, and you restart it (heat-soak problem maybe?)
Happens most often around 2000 rpm.  Will feel like a total loss of power,
even with pedal to the floor, for 1-2 sec, and then it recovers.  I have the
replaced ignition coils, and dealer has changed the throttlebody.  I get
random misfires all over the place, never the same cylinder.  I pulled 5-6
fault codes off this past weekend, but I haven't had time to look them up
yet (is the list in the shop manual?  Is there an online list somewhere?)

Something has been telling me that this is an electrical problem, like a
sensor that's starting to go bad, and send false signals which is confusing
the computer.  But now that you mention this ignition control module (ICM),
perhaps I should start looking there.  I have shop manuals at home, I'll
check them out tonight, but does anyone know if there's any kind of test to
tell if the ICM is good or not?  

Does anyone know if my car even has this ICM, and are they a known problem
in my model year?  Lastly, if it is the ICM, is there a jobber part that's
better, or just stick with the Audi/Bosch version, and be prepared to change
it every few years?

Thanks a lot for any help you can give me with this problem.  I've been
living with it on and off for 3 months now, and it's starting to drive me



Date: Fri, 24 Jun 2005 14:46:43 -0600
From: "Brandon Rogers" <brogers at terrix.com>
Subject: Re: [A4] Coil Pack Help
To: <A4 at audifans.com>

quick follow up 
installed Ignition Control Module last night - takes about 2 minutes - the
car is running perfect again.

Thanks to Pbadore for pointing me towards the ICM vs what I was thinking -
(the coil packs).  And I must say the Pro-Diag from Shadetree was very
helpful too.


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