BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)


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      11-08-2013, 06:07 PM   #1
Dr. D
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Drives: '10 135i
Join Date: Dec 2012
Location: Reston, VA

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Defective ignition coils common?

A few days ago I was at a stop light. When I started out, something was a bit off. When I shifted into 2nd, something was way off; engine stumbling and it wouldn't get over 2,200 RPM. I pulled off the road and shut it down. Start it up and everything is fine. Oh, when the engine was stumbling the 'service engine soon' idiot light came on.

The next day I took the car to the dealership. Turned out to be a defective #6 ignition coil. They replaced that and the spark plug since it was fouled from the misfires. They also replaced the rear brake pads since they were below spec. All under warranty; that was nice.

OK, was this just an odd event? Do you see this occasionally, or more often? BTW, the car has just under 32,000 miles on it.
Drive: '10 135i
Ride: '13 BMW F800GT
Dr. D is offline   United_States
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      11-08-2013, 06:09 PM   #2
Dackelone's Avatar
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 15,999
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Yes. The spark plugs, coils and injectors do go bad in our cars. Spark plugs should be replaced every 45K miles. Coils are probably only good for ~80K miles.
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