Ignition coil died at only 17K miles 🤬

lordbmw · 11-24-2022, 08:23 AM

One of my Delphi ignition coils died at only 17K miles of use.

A little annoyed, but I did buy it from FCPEuro so I'm sending it back to them for credit.

Anyone else had a Delphi ignition coil pre-maturely die?

They should be good for at least 30-40K I believe.

dmatre · 11-24-2022, 10:04 AM

Mine are still going strong. I don't recall mileage, but they're about 4 years old.

One odd question: which cylinder?

My unscientific investigation leads me to believe the majority of failures are cylinders 5 & 6, and that heat may be a factor.

lordbmw · 11-24-2022, 10:36 AM

Quote:

Originally Posted by dmatre

.
One odd question: which cylinder?

Cylinder 3

My car is slightly tuned and modified.

dmatre · 11-24-2022, 11:25 AM

Quote:

Originally Posted by lordbmw

Quote:

Originally Posted by dmatre

.
One odd question: which cylinder?

Cylinder 3

My car is slightly tuned and modified.

There goes my theory…

The Nightman · 11-25-2022, 07:30 PM

Quote:

Originally Posted by dmatre

My unscientific investigation leads me to believe the majority of failures are cylinders 5 & 6, and that heat may be a factor.

I've noticed the same, and it does make sense with more heat getting trapped in the back of the engine bay. No proof though!

Quote:

Originally Posted by lordbmw

Cylinder 3

My car is slightly tuned and modified.

Delphi ignition coil production moved to China recently. Where was the failed unit made?

mecheng77 · 11-26-2022, 10:45 AM

I still have the original coils at 150,000km

jadams161 · 11-27-2022, 10:04 AM

Delphi are junk. Get Eldor coils only.

mecheng77 · 12-03-2022, 06:17 AM

Update: one Bosch coil just failed at 150,000km, it was dated 2007. I recommend Bosch coils, the other 5 are still working perfectly

desertman123 · 12-03-2022, 08:23 AM

Get the new Eldor coils

lookalikehuuh · 12-03-2022, 11:15 AM

I've never been a fan of anything Delphi personally. I have Bosch in my N52 and Eldor in my N54.

Bosch have like 80K miles on them without any issues, and my original ones lasted over 100K miles before I replaced them for "maintenance" but they were still running ok.

Eldors only have like ~15K on them but I'm stage 2+ E50 MHD and no issues so far.

53N30W · 12-04-2022, 08:51 AM

I have a 328 with 34k miles on it. Last month # 1 coil died and I changed it. Just now # 4 died so I am changing all of the remaining coils. I would have changed all of them when I first had it apart but thought it was a one off failure , I guess not. Strange

mecheng77 · 12-04-2022, 02:06 PM

Quote:

Originally Posted by 53N30W

I have a 328 with 34k miles on it. Last month # 1 coil died and I changed it. Just now # 4 died so I am changing all of the remaining coils. I would have changed all of them when I first had it apart but thought it was a one off failure , I guess not. Strange

Quote:

Originally Posted by 53N30W

I have a 328 with 34k miles on it. Last month # 1 coil died and I changed it. Just now # 4 died so I am changing all of the remaining coils. I would have changed all of them when I first had it apart but thought it was a one off failure , I guess not. Strange

Wow how do you have such low mileage.
Maybe the plugs are fouled putting extra load on the coils?

53N30W · 12-05-2022, 07:18 AM

Quote:

Originally Posted by mecheng77

Wow how do you have such low mileage.
Maybe the plugs are fouled putting extra load on the coils?

That's a thought, Thanks

11-24-2022, 08:23 AM	#1
lordbmw Captain 270 Rep 790 Posts Drives: 2010 BMW 335xi Coupe (AT) Join Date: Sep 2016 Location: Alexandria, VA iTrader: (0)	Ignition coil died at only 17K miles 🤬 One of my Delphi ignition coils died at only 17K miles of use. A little annoyed, but I did buy it from FCPEuro so I'm sending it back to them for credit. Anyone else had a Delphi ignition coil pre-maturely die? They should be good for at least 30-40K I believe.
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11-24-2022, 10:04 AM	#2
dmatre Captain 665 Rep 740 Posts Drives: 2011 328i Sedan Join Date: Apr 2011 Location: The Carolinas iTrader: (0)	Mine are still going strong. I don't recall mileage, but they're about 4 years old. One odd question: which cylinder? My unscientific investigation leads me to believe the majority of failures are cylinders 5 & 6, and that heat may be a factor.
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11-26-2022, 10:45 AM	#6
mecheng77 Colonel 1006 Rep 2,243 Posts Drives: 2007 328i / 2014 M235i Join Date: Nov 2017 Location: Ontario Canada iTrader: (0) Garage List [0.00] [0.00]	I still have the original coils at 150,000km
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11-27-2022, 10:04 AM	#7
jadams161 First Lieutenant 171 Rep 339 Posts Drives: 2009 E93 335i. 2011 E90 328xi Join Date: Apr 2021 Location: Upstate New York iTrader: (1)	Delphi are junk. Get Eldor coils only.
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12-03-2022, 06:17 AM	#8
mecheng77 Colonel 1006 Rep 2,243 Posts Drives: 2007 328i / 2014 M235i Join Date: Nov 2017 Location: Ontario Canada iTrader: (0) Garage List [0.00] [0.00]	Update: one Bosch coil just failed at 150,000km, it was dated 2007. I recommend Bosch coils, the other 5 are still working perfectly
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12-03-2022, 08:23 AM	#9
desertman123 E82 Mudflap Ambassador 2214 Rep 2,219 Posts Drives: '08 128i Join Date: May 2016 Location: Orlando, FL iTrader: (0) Garage List 1992 Honda Beat [9.50] 2008 BMW 128i [10.00] 2014 BMW 528i [10.00]	Get the new Eldor coils __________________ My 2008 128i - Sparkling Graphite/Beige - Sport pkg - 6MT - Click me! Parents' 2014 528i - Mineral White/Ivory White - fully loaded Instagram @Andreys_128i and @Honda.Bito
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12-03-2022, 11:15 AM	#10
lookalikehuuh Major 700 Rep 1,227 Posts Drives: 2006 330i, 2007 335i Join Date: Sep 2014 Location: San Diego, CA iTrader: (0)	I've never been a fan of anything Delphi personally. I have Bosch in my N52 and Eldor in my N54. Bosch have like 80K miles on them without any issues, and my original ones lasted over 100K miles before I replaced them for "maintenance" but they were still running ok. Eldors only have like ~15K on them but I'm stage 2+ E50 MHD and no issues so far.
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12-04-2022, 08:51 AM	#11
53N30W Enlisted Member 20 Rep 44 Posts Drives: 2009 E92 328 Join Date: Nov 2012 Location: Pompano Beach FL iTrader: (0)	I have a 328 with 34k miles on it. Last month # 1 coil died and I changed it. Just now # 4 died so I am changing all of the remaining coils. I would have changed all of them when I first had it apart but thought it was a one off failure , I guess not. Strange
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