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Cylinder 2 Misfire - Changed Ignition Coil and Spark Plugs and it's still misfiring and now the engine is limiting performance.

5.5K views 7 replies 5 participants last post by  Breezy  
#1 ·
I have a 2012 Volvo S60 and when I was driving on Thursday in the morning last week, the engine started to shake and started to misfire. It was bad to the point where whenever I accelerated, the check engine light would flash rather than stay solid. I checked the ignition coil and it appeared to be bad so I ordered a brand new set of ignition coils for all 5 cylinders (Bosch) along with some new spark plugs (NGK). Once done installing all the following, the engine is running smooth now but I am still getting a misfire code and the turbo isn't boasting. I've reset my computer before taking it on a drive and got these codes. I would ignore the last one as I always get that code for quite a while before this issue started to happen.

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#3 ·
Yo bro you need to fix that turbo charger issue, that will cause all of those issues if there isn't enough air to make the right air fuel ratio.
Cause:
  • Damaged turbocharger (TC) control valve.
  • Air leakage in the intake system.
  • Damaged turbo charger (TC).
  • Damaged relief valve.
  • Hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve have come loose or are blocked or damaged.
  • Sticking boost pressure control (BPC) valve.
  • Damaged boost pressure control (BPC) valve pressure servo.

Good luck broski!
 
#4 ·
Yo bro you need to fix that turbo charger issue, that will cause all of those issues if there isn't enough air to make the right air fuel ratio.
Cause:
  • Damaged turbocharger (TC) control valve.
  • Air leakage in the intake system.
  • Damaged turbo charger (TC).
  • Damaged relief valve.
  • Hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve have come loose or are blocked or damaged.
  • Sticking boost pressure control (BPC) valve.
  • Damaged boost pressure control (BPC) valve pressure servo.

Good luck broski!
Alright I will take a look. Is it safe to drive 30 miles to mechanic.