BMW Fuel Rail Sensor Causing Stalls and Power Loss

I had almost identical symptoms with my 2012 BMW 5 Series last year. The rough idle, stalling, and power loss were exactly what I experienced. After diagnosis, it turned out to be a faulty rail pressure sensor. My mechanic showed me that the sensor was sending incorrect readings to the ECU, causing the fuel system to malfunction. Had to get the sensor replaced plus they cleaned the entire fuel rail system since some debris had accumulated. The whole repair took about 4-5 hours. It's definitely not something you want to ignore, a faulty pressure sensor can lead to more serious engine damage if left unchecked. In my case, catching it early prevented any damage to the fuel injectors or other components. Been running smooth for about 8 months now with no issues. Make sure you get a proper diagnosis and use OEM parts for the repair. Worth noting that this is a known issue in several BMW models from that era.

this is exactly what happened to me! The symptoms match perfectly what I experienced. Got it fixed last year and my 7 has been running like a dream since then. Super smooth, no more stalling or weird idle issues. Hey btw, do you remember roughly how much you paid for the whole thing? Just curious if prices have changed much since then. Has everything stayed solid with your car after the repair, or did you run into any other issues?

Hey there! Yeah, I remember our chat about the rail pressure sensor issues. Good to hear you got your 7 Series sorted out! About the costs, I paid 240 € for the whole job, which included replacing the faulty pressure sensor. Honestly, it was worth every penny because my 5 Series has been running perfectly ever since. No more stalling, weird idle behavior, or power loss issues. It's like having a completely different car now! Since getting it fixed at my mechanic, everything's stayed rock solid. Haven't had a single problem with the fuel system or any related problems. It's been about a year and a half now, and the car's still running as smooth as butter. Really glad I got it sorted when I did, definitely prevented any potential bigger issues down the line. Just shows how important it is to address these sensor problems quickly, right? These BMWs are great cars when everything's working as it should!

Thanks for the follow-up! Yeah, I ended up paying a bit more, around 300 € total. The mechanic I found was actually pretty amazing. Took the time to walk me through everything they were doing and even showed me the old sensor. Funny story actually, when I went to pick up my car, they were super backed up with other repairs. Had to wait around for about an hour, but the mechanic felt bad and threw in a free fuel system cleaning. Made friends with another BMW owner in the waiting room too, swapping car stories! Like you said, the car's been running perfectly since. Such a relief not having to worry about those unusual stalls anymore, especially during heavy traffic. Really appreciate you sharing your experience back then, helped me make the right call getting it fixed promptly. These BMWs really are something else when they're running right!