I have an infrequent misfire like a bad plug etc when idling. It may misfire at speed but I don't feel it. Have had it to the dealer twice and an authorized Volvo Service Shop once-no codes and, of course, it doesn't skip for them. This has been occurring on and off for the past 6 months.
I am wondering about things like the coil or perhaps if moisture is getting to something. It was raining yesterday and today when it misfired again.
Anyone have any suggestions. Oh. It's been completely tuned up by the dealer about 1 month ago. 99 S70 GLT with about 55,000 on the engine.
Love these "intermittent" problems!
Thanks
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