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manfredmond30
C5 Diesel Engine Stalling Power Loss
4 comment(s)
manfredmond30 (Author)
Yes, I have noticed rough idling and I'm definitely getting fewer kilometers per tank. Was it indeed the fuel volume regulator or high-pressure pump in your case? Any details would be greatly appreciated.
victoriablaze59
Yep, it was the high-pressure pump. I ended up having to replace it. I would get it checked at a reputable workshop ASAP. They'll probably run some diagnostics and confirm if it's the pump before you go throwing money at parts.
manfredmond30 (Author)
Thank you for sharing your experience. I appreciate the advice. I took it to a workshop, and they confirmed the high-pressure pump was defective. Repair cost me 1510€.
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victoriablaze59
Sounds familiar! I had almost the exact same symptoms with my C5 – check engine light, stalling, and power loss. It does sound like the fuel volume regulator or the high-pressure pump. Have you noticed any rough idling or decreased fuel efficiency?