ellajohnson4
DS3 Fuel Pressure Regulator Problem
Summary of the thread
The conversation revolves around a 2011 Citroen DS3 experiencing fuel pressure regulator issues, leading to symptoms like the check engine light, engine stalling at idle, and limp mode. The problem arose after a fuel filter change, with suspicions of a faulty pressure sensor. After ruling out air in the fuel lines and ensuring the fuel pump was functioning correctly, it was suggested that the fuel pressure regulator might be defective. This was confirmed, and replacing the regulator resolved the issue.
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4 comment(s)
ellajohnson4 (community.author)
Bleeding procedure followed. I used the prime function in Diagbox. Triple checked for leaks. I also considered changing the fuel pump. Any other thoughts about the sensor, fuel system etc.?
neleblaze8
Okay, if bleeding wasn't the issue and the pump sounds healthy (no whining?), it does sound like a sensor malfunction. Considering the error entry after the filter change, a faulty fuel pressure regulator is highly probable. To be certain, have it diagnosed at a workshop with proper diagnostic tools. Avoid unnecessary part cannoning!
ellajohnson4 (community.author)
Cheers. The issue was in fact a defective fuel pressure regulator, as suspected. 45€ part. All working now!
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CITROEN
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DS3
neleblaze8
Ah, the dreaded fuel pressure gremlins! Had a similar issue with my old Vauxhall Astra after a fuel filter change. Same symptoms: rough idle, then stalling, felt like the fuel pump was dying. Did you bleed the fuel system properly after the filter replacement? Air in the lines can wreak havoc with the pressure readings.