C5 Diesel Engine Stalling Power Loss

I'm having a problem with my 2008 Citroen C5 diesel. The check engine light is on, and the engine sometimes stalls when idling. I've also noticed a significant loss of power. The car has 228362 km on it. Could this be a defective fuel volume regulator? I suspect the high pressure pump. Any thoughts?

4 comment(s)

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?

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.

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.

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€.

Join the discussion now: