Hello,
Recently purchased a 2003 P5 manual with 115k miles. Two days ago driving in the rain I heard a violent ping and clanking noise coming from the engine while accelerating.
I pulled over immediately and let the car idle while I listened. I could hear every so often what sounded like a ball bearing getting flung around between the valve cover and the head.
I have researched the VTCS (VICS?) butterfly valve issue and am wondering if this is the same experience others have had. I haven't read about people actually diagnosing and hearing this sound. I also have a code P0661, "Intake manifold tuning valve control circuit low". Thise evidence leads me to believe one of the screws holding the butterflys let go and bounced into the combustion chamber.
If anyone has thoughts on this please let me know. Next step is gonna be to tear into the manifold to see whats going on.
Recently purchased a 2003 P5 manual with 115k miles. Two days ago driving in the rain I heard a violent ping and clanking noise coming from the engine while accelerating.
I pulled over immediately and let the car idle while I listened. I could hear every so often what sounded like a ball bearing getting flung around between the valve cover and the head.
I have researched the VTCS (VICS?) butterfly valve issue and am wondering if this is the same experience others have had. I haven't read about people actually diagnosing and hearing this sound. I also have a code P0661, "Intake manifold tuning valve control circuit low". Thise evidence leads me to believe one of the screws holding the butterflys let go and bounced into the combustion chamber.
If anyone has thoughts on this please let me know. Next step is gonna be to tear into the manifold to see whats going on.