Lifetime of PR coils, any opinions/experiences?

Asbjorn

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Mar 10, 2018
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I have 80.000km or so on mine. Wondering when these wear out and need replacing.

I get the occasional 2E1C (firing cylinder 5) or similar for other cylinders. Always only one cylinder and always stops after a few seconds. Very random and problem seems to disappear for months after we disconnect and reconnect the coil complaining.

If these a caused by bad connections I wonder how often Im getting less than optimal ignition without even knowing.
 

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martymil

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Sep 6, 2017
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Switch coils between cylinders and see if it moves, highly unlikely its the coil.

Its either your adapter wiring between the original harness and the coil or something else.

I have a persistent cyl 5 timing drops since the car was brand new on occasion.
 
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Asbjorn

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Mar 10, 2018
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How old are your leads/wires, and what version lead are you using?

Same age as the coils. +2 years old. However the spark plug wires are from Feb 2020. I mean these:

 

ShocknAwe

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Jan 24, 2018
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Same age as the coils. +2 years old. However the spark plug wires are from Feb 2020. I mean these:


Ought not to be it then.
 

V8bait

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Nov 2, 2016
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But back to the original topic - any opinions on the lifetime on these? Or we just wait until misfires start to happen and then replace.

I helped dev them and have had my set since circa 2016 (had one beta set before I gave to a friend after a year of abuse that is still running them), mine were installed around 40k and one motor ago on my setup. My leads are the newer versions and I did have a failure on one coil recently.

To be fair I did track them with a module designed to overvolt them to 19v (similar to kenne bell boost a spark) while simultaneously running them at 6ms dwell for around 10k of those miles.

I also baked on a chemical resistant paint designed for engine parts because I wanted them black not the old blue.

Also these were a set of “faulty” coils returned by a certain Vu in 2016 that had been “damaged” by a single turbo.

5/6 OG painted fugly blues and 1/6 sexy black putting down fine again.

tl;dr swap coil body see if misfire moves. If it does, coil. If it doesn’t, lead/plug/injector/engine or along those lines.
 
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