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Originally Posted by MY15.50i
Ok, the mystery deepens.
So I replaced all spark plugs and gapped them. Car ran ok-ish yesterday, it did hesitate (I pulled ISTA and no errors) but today it violently shook when I stepped on the gas pedal while I was overtaking. I pulled ISTA and still no codes.
While I was replacing spark plugs I noticed some deposits on one of the coil packs which I'm going to replace soon as soon as it will arrive in the mail.
Seems odd that coils go bad at such a low mileage but I know it's not unheard of.
Any idea of what could be happening here, maybe bad coils? And why no errors in ISTA?
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I had a coil go bad at 80,000 kms. I think it was slowly going bad because after replacement, the engine ran so much better than it had run in the last 50,000 kms.