So I blew the same coil back (driver side, closest to front) twice in 4 days. It lasted maybe 400 miles on the new coil pack. They both melted in the same spot, similar to images other my350z users have posted with their packs blowing.

I checked all grounding, wiring and connectors and everything is tight. I even tested the wiring with a VOM and everything is solid. The plug looks fine as well.

Has anyone seen this before? WTF is going on?

 

Yes I have seen it before, once the utec was removed the problem was solved. We could never pin point why it was happening... It was throwing a u1000 code.

 

This happened to me before I purchased a UTEC. If you turn on the ignition key but dont start the car check the coil pack to see if its warm. If the coil pack is warm/hot than your ECM needs to be replaced. This cost me 2K for the dealer to replace ECM and me providing the coil packs@1/3 price dealer charges.

 

Did they die while you were driving?

Both times mine went when I was lightly cruising along at 30-40mph. Immediately you feel a loss in power and check engine light starts blinking.

 

This is how the ones I was speaking of went, as soon as we put it back to just the stock ecu it would work perfect. I was thinking it was a short in the utec, but a second utec confirmed it was not.

 

Thanks!

 

More of a reason im switching to the Osiris and dumping the utec.

 

Yea me too, I am price shopping now.