Car broke down yesterday, I popped the hood and saw my ignition coil cracked down the middle, and melted in the lower right corner. This is my second ignition coil and i'm at 96000 miles. The first one went at 76,000 miles?!?

My car is stock, except for exhaust, intake, and hella driving lights. Any ideas why? Has anyone gone through this many coils?

 

Great...installed a new ignition coil, and it fried in under a minute. The same thing happened 20,000 miles ago, and the DME hd to be replaced....WTH!?!

 

Yeah, sounds like you have a short in your wiring somewhere. Gonna have to get a technician to trace it out and replace the bad wire.

 

Yeah, I have never seen a melted coil. The DME can fry the coil, thats possible. Would need to see this one in person but sounds electrical

 

First off Wrong Thread. This should be in the second gen Mini Forum...

So, I bought My Wife a 2007 R56 Mini Cooper That Had The Famous Carbon Buildup problem.

I Had The Cylinder Head Completely Re-built. Installed Everything Back On the Vehicle And What do you know.... Melted Coil #2 Not Once But TWICE!

So, I decided To Dig a little deeper and started tracing back the wiring for ignition coil #2

I began with the ECM Plugged In and Tested the (Yellow Wire) which was not outputting any voltage and found it is grounded out. So, I removed the wire harness from the ECM And Checked from end to end to see if the yellow wire was in fact grounded somewhere in the harnes. I Came to the conclusion IT WAS NOT.

So, Me being somewhat of a component lever repair man with computers. (I Decided To Dig a Little Deeper by removing the ECM And Tracing back where the pin leads to for cylinder #2 on the motherboard of the ECM.

I found all 4 ignition wires for each cylinder run to a set of MOSFETS Part # N171AD. I Traced cylinder #2's Mosfet, Removed it from the motherboard and what do you know No Melted Coil Pack when the Igntion is ON. it stays completely cold as it should.

Now for the fun part.... finding the component to replace it with....

I am not much of a FORUM Poser but I figured this is something that would help alot of people. And maybe I can repair it for them if needed

I will let you know my findings when i Get the New IC for the ECM and install It.

 

Good work Mike!

I've seen similar issues on a couple of different VWs. Coils would burn out in the course of a few weeks or a few months. The problem in both cases was a faulty ground wire to the coil(s).