Hi Matt, this is useful info, thanks for posting. To recap, your original info was "Misfire on #3". Is that the coil that you ended up finally replacing to fix the issue? Sounds like it was, but wanted to confirm. Thanks! Roger That is correct. The coil in #3 was bad, causing the misfire....

Quick update-- got confirmation on the *correct* cylinder numbering as per above. Replaced the actual bad cylinder. Runs like a dream. Problem solved! Thanks.

Big thank you for the replies. Called the Volvo dealer and they quoted a lower prices for the fuel injector replacement so I took it to them and asked for a diagnostic too. Turns out... it wasn't the fuel injector at all! It actually was a bad coil on cylinder #3... I had some FALSE info from a frie...

Suddenly got bad shaking idle and rough slow acceleration. Got the codes read: Misfire on cylinder #3 (a couple months ago I had a CEL for something to do with an oxygen sensor in the fuel tank but it went away-- no idea if it might be related). I swapped out the plug and coil on that cylinder. No c...