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3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

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Old 03-12-2006, 02:42 PM   #1 (permalink)
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Question eating coils!

My 2002, 320 convertible keeps blowing coils, BMW keeps changing them and within a week I am back on 5 cylinders and back in BMW workshops. I am getting seriously VEXED! : all BMW keep doing is changing them and not trying to find out why they go.
There is no patern to when they go, I may be driving and will suddenly drop a cylinder, or may start car in the morning and will only fire up on 5.
Has anyone had similar problem or heard of it? and if so, any idea what the cause could be?

Thanx, from a seriously frustrated Beemer driver
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Old 03-12-2006, 05:34 PM   #2 (permalink)
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bremi coils had a recall recently. otherwise, i do not know. perhaps voltage regulator (or modern car equivalent), bad plug wires which short....
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Old 03-12-2006, 08:03 PM   #3 (permalink)
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I would be checking the wiring...since there are no plug wires on a coil over plug system...also is it the same cyl each time or do you know for sure?
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Old 03-13-2006, 06:57 PM   #4 (permalink)
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good point about "plug" wires (my mistake): for low voltage wires it would take ALOT of damage to make a short.

is there any crap accumulated around the plugs? that can also sometimes do it....
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Old 03-14-2006, 10:59 AM   #5 (permalink)
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Thanx for your suggestions

Thanx for the feedback,
has been a different coil all 3 times since I had all coils changed last December due to other issues. So as you said Peter, obviously a bad batch. I got them to replace the other 3 as well as the blown one.
Running sweet again
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