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richardeule48

Peugeot 4007 Stalling Reduced Power

I'm having trouble with my 2007 Peugeot 4007, diesel engine. The check engine light comes on, it stalls at idle sometimes, and engine power is reduced. I suspect a defective fuel pressure regulator. It happened after I changed the fuel filter and now I'm seeing error codes related to fuel pressure. Mileage is 10756 km. Any ideas?

Summary of the thread

A 2007 Peugeot 4007 with a diesel engine experienced stalling, reduced power, and a check engine light after a fuel filter change. The issue was suspected to be a defective fuel pressure regulator, as indicated by error codes related to fuel pressure. After consulting with a mechanic, the regulator was confirmed to be the problem and was replaced, resolving the issue.

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4 comment(s)

ClaudiMei

I had similar issues with my 4007. Was it a sudden drop in power, almost like a fuel cut-off? Did you check the fuel rail pressure?

richardeule48 (community.author)

Yes, it's a sudden drop, especially when idling after it warms up. I haven't been able to check the fuel rail pressure directly, but the codes point to it being low. Do you think it's the regulator for sure? Anything else I should be looking at?

ClaudiMei

Sounds very familiar. I was convinced it was the regulator. Honestly, save yourself the headache and get it checked at a workshop. They'll diagnose it properly. I ended up replacing mine and it fixed the problem.

richardeule48 (community.author)

That's what I was afraid of. Took it to a mechanic, and you were right; fuel pressure regulator was indeed defective! Error entry must have happened during the filter change like I thought. Replaced it for 45€ and now everything is back to normal!

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PEUGEOT

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4007