I had this exact issue and just fixed it with a new ignition coil. I bought a bosch replacement and I haven\u2019t had the issue since.
Pros: issue fixed
Owner reviews for ignition coil
Manufacturers
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AC Delco is an OEM GM parts and any coil will do pretty much personally I use Delphi ones they seem to last pretty long
Pros: last pretty long
Make sure when you replace these you use too quality plugs from a reliable parts store, too many stories of bad fakes or lower quality products from online sources. Coils are also likely a good idea at this point, again go with Bosch, again from a reliable source.
Pros: use quality plugs
Cons: bad fakes online
I bought a new Denso coil to put on cylinder 3 just to eliminate it as a possibility.
Pros: eliminate possibility
Vehicle:
Volkswagen Passat
After fighting everything out, a friend came over and confirmed that the #7 coil was in fact bad, so thankfully that was the cause of the misfire.
Pros: cause of misfire
Cons: coil was bad
Vehicle:
Ford Econoline
I got Delphi and they work great
Pros: great performance
Autozone duralast, cheap and get the job done. Coils are coils and don’t really affect any performance
Pros: cheap, get the job done
Cons: don't affect performance
Vehicle:
Audi S5
I have a 2003 XC70. The coils go out suddenly with no warning. But they're cheap. Grab a new set and you'll be good to go.
Pros: cheap, easy to replace
Cons: go out suddenly
Vehicle:
Volvo XC70
I replaced all 4 in my tuned stage 2 q3 2013 to red bosch coils. 1 of the red ones died last year.
Cons: one coil failed
Vehicle:
Audi Q3
I just bought my son three coil on plug ignition coils with the NGK box but country of origin, China. I'm not happy with any Chinese crap.
Cons: Chinese origin, low quality
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