BMW 320d Boost Sensor Nightmare: Jerks, Hisses & Stalls

I had similar issues with my 2015 BMW 318d just last month. The symptoms were identical, jerking during acceleration, power loss, and that distinctive whistling noise. Took it to my regular mechanic, turned out the boost pressure sensor's wiring harness was damaged, and the connector was corroded. The sensor itself was actually fine, but the faulty connection was causing erratic readings. The repair involved replacing the wiring harness and cleaning the connector points. It wasn't a major repair, but definitely not something to ignore. Poor sensor readings can lead to more serious turbo issues if left unchecked. The turbo was working harder than necessary, which explained the increased fuel consumption. My advice? Get it checked soon. These symptoms won't fix themselves, and running the engine with incorrect boost readings could cause bigger problems down the line.

Hey, thanks for sharing your experience! That's exactly what I was dealing with, such a relief to hear someone else had the same issue. Mine's fixed now, but I'm curious about your repair costs since BMW parts can be so hit or miss with pricing. Also, has everything been running smoothly since the fix? I'm a bit paranoid about other problems popping up and would love to know if you've noticed anything else acting up.

Hey! Glad to hear you got it sorted out! Yeah, after dealing with my 318d's issues, I totally get that paranoia about potential problems. But I can tell you that since I had that bad boost pressure sensor fixed, my car's been running like a dream. The repair was actually pretty straightforward, turned out to be just a cable/plug connection issue, and it only set me back 95 €. Way cheaper than I expected for a BMW repair! To answer your question, it's been about six weeks since the fix, and honestly, everything's been perfect. No more jerking, no weird noises, fuel consumption is back to normal, and the engine's running super smooth. It's such a relief when you find out it's just a simple connection issue rather than something major with the turbo itself! Seriously though, once they fix that sensor connection properly, these cars run like clockwork. Haven't noticed any other issues popping up at all. Just keep up with regular maintenance and you should be good to go!

Thanks for the update! you got lucky with that repair cost, mine was a bit steeper since they had to replace the entire sensor unit. But hey, at least it's all sorted now. Let me share my repair story, after getting suspicious about the first mechanic, I took it to another shop that specializes in German cars. The guy spotted the issue right away. Turns out the previous mechanic had damaged the sensor while doing routine maintenance. The new guy fixed it in about two hours, and while it wasn't cheap, the difference in how the car runs now is like night and day. The whistling's completely gone, acceleration's smooth again, and fuel consumption's back to normal. Such a relief! The mechanic also gave it a full inspection just to make sure there weren't any other issues lurking around. Everything checked out fine, so I'm feeling pretty confident now. Really appreciate you sharing your experience, it helped confirm I was on the right track with the diagnosis. These BMWs can be tricky, but when they're running right, they're fantastic cars.