Coil pack Replacement
Banned
Joined: Mar 2011
Posts: 10,084
Likes: 1,206
From: Spring Lake, NJ, US of A
Coil replacements can be almost any year or engine. It's due to the design constraints on putting a coil in a hot sealed environment, and pushing it harder to make a spark that a distributor engine would get from a coil 4x the size - in open air.
They perhaps should be looked at as consumables. That said - my '11 CTT still has the original coils in it at 87,000 miles. One thing that can accelerate coil failure is worn plugs - which require an even higher voltage to fire. Replacing your plugs and examining the coils at the same time - on schedule - is a good thing.
BTW - my BMW's ate a lot more coils than my Porsches..
They perhaps should be looked at as consumables. That said - my '11 CTT still has the original coils in it at 87,000 miles. One thing that can accelerate coil failure is worn plugs - which require an even higher voltage to fire. Replacing your plugs and examining the coils at the same time - on schedule - is a good thing.
BTW - my BMW's ate a lot more coils than my Porsches..
Burning Brakes
Joined: May 2018
Posts: 952
Likes: 192
I got the misfire code on Cyl 1 my 08 GTS just shy of 95k - pulled all coils out, all appeared to be original with early revision number. Cyl 1 and 2 coils had multiple cracks, the rest all had single crack. If you're super vigilant I suppose you could stretch it by checking it frequently and replace when you start getting more than a single crack, but I'd rather not get stranded 200 miles from home. Besides, the latest coils from the dealer set me back less than $55/coil, so not the end of the world.
Pro
Joined: Jun 2017
Posts: 552
Likes: 3
Yeah, misfire, 100% replace them asap. I'm just not on board 100% with the idea that cracked-plastic = bad coil. Perhaps that was the case with the earlier revisions, but it didn't seem to have any effect on mine. I think the ones that I replaced were .05, I still have them in a box just-in-case.
cheers,
c
cheers,
c
