no spark in cylinders 1 and 4
for wat reason would their be no spark on cylinders 1 and 4..its a audi a4 1997 adr engine code.ive tryed changing coil pack and problem still excist
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Do a search on this forum for Ignition control module or ICM and you will see that it is most likely the cause of your problem.
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Agreed, the ICM (ignition control module) also known as the power output stage controls voltage to the coils, if that doesn't work, you won't have spark.
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Originally Posted by bkraska
(Post 1207259)
Do a search on this forum for Ignition control module or ICM and you will see that it is most likely the cause of your problem.
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a little more info please, what year/ size of the engine....I would start on checking spark plugs, coilpacks. You can swap coil packs and see if the problem follows the cylinder...
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Thats true, if this is a 2.8L then your problem isn't the ICM. On the 2.8L you have one coil pack fire two cylinders. If the coil pack is firing 1 and 4 then swap the coil set and see if the misfires move.
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ADR is a 1.8 I believe. He already tried to change coil packs so that is why I pointed him towards the ICM. You should find the ICM on top of the air box (where your air filter is)
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