sarahmystic4

Peugeot 408 rough idling and stalling

I'm having a really annoying problem with my 2022 Peugeot 408 hybrid. It's got almost 280000 km on the clock. Lately, the engine's been running really rough, especially when it's idling – sometimes it even stalls. The check engine light is also on, which is never a good sign. Plus, when I try to accelerate, it feels like the car is jerking. I've checked the spark plugs, and they seem okay. Could it be the coil pack? Any ideas what might be causing this?

A 2022 Peugeot 408 hybrid with 280,000 km is experiencing rough idling, stalling, and a check engine light, with jerking during acceleration. The initial suspicion was a defective ignition coil, despite the spark plugs appearing fine. A suggestion was made to inspect the coil pack connections for damage or corrosion, and to ensure they are tight. After taking the car to a mechanic, it was confirmed that the issue was indeed a faulty ignition coil and cable, which were replaced, resolving the problem.

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4 comment(s)

I had a similar issue with my old Volvo V70, although it was a petrol engine. Those symptoms—rough running, stalling, check engine light—sound a lot like a defective ignition coil. Have you checked the cable and plug connections to the coil pack? A loose or corroded connection can cause those exact problems.

Thanks for the quick response! You mentioned checking the cable and plug connections. Is there a specific way I should be checking them? Like, do I need any special tools, or is it just a visual inspection?

It's best to start with a visual inspection. Look for any obvious signs of damage, like frayed wires or corrosion. Then, make sure the connections are tight. If you have a multimeter, you could also check the continuity of the wires. Honestly, if you're not comfortable doing that, it might be worth taking it to a workshop. My Volvo ended up needing a new coil, and the diagnostic work helped pinpoint it quickly.

Thanks a lot for the advice! I took it to a local mechanic, and you were spot on – it was indeed a defective ignition coil and the cable was faulty. They replaced it, and it cost me around 95€ including labour. The car is running smoothly now! I really appreciate the help.

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PEUGEOT

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408