6th Gen ('00-'05): Afterfiring during hard acceleration

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Dec 2, 2022 | 05:35 PM

#31

The_Maniac

Monte Of The Month -- December 2011
Monte Of The Month -- September 2014

iTrader: (2)

Joined: Apr 2010

Posts: 12,606

From: Mentor, Ohio

Quote:

Originally Posted by bumpin96monte

Same. Ive got 3 L67 coils on the spare parts shelf that I snagged from a junkyard on one of their half off days years ago. Had no need for them at the time, but they were dirt cheap and the junked cars were relatively low mile (plus we had 3 3800 cars at that time).

I have tons of non-L67 coils laying around. I really do need to get a full spare set some time for exactly this reason. Granted, if one fails, I *could* use a non-L67 coil set temporarily. But where is the fun in that lol!

Dec 3, 2022 | 09:55 AM

#32

1st-monte-ls

Thread Starter

Joined: Nov 2018

Posts: 132

From: Albuquerque NM

Quote:

Originally Posted by The_Maniac

That sucks, but at least you found it. I stand by a statement I said earlier, I find OEM coils, very trust worthy. Even junk yard coils (which I have two L36 3800 Montes and a 3400 Grand Am running junkyard L67 coils). Heck, I rather salvage an OEM coil these days over an aftermarket. I have seen OEM coils last almost forever (note the word almost) and aftermarket replacements fail in less time than the OEM.
I do hope for ZZP you happen to have a rare failure.

Now.... How did you ultimately find it? Did you just swap the OEM coils back in?

When I did the head gasket job I wiped some shmoo off the ICM and it's heatsink. I didn't know that it was thermal paste until recently. I installed a new ICM and the car ran WORSE. After that I put the OEM coils back on as a last ditch effort, the car now runs fine untill 3k rpm where it's starts backfiring randomly.