P0340 - Cam Position Sensor fault

[Bdc101]

I got in my car this afternoon and it felt very sluggish. It still got me where I needed to go, but it was very slow and I killed it trying to start off in 1st gear a couple of times (it is a manual trans). This was very sudden, it had not been sluggish or anything before this.



Pulled codes... P0340 plus the same code in the DME (using a Foxwell to pull the BMW code, I forget the number). No O2 codes or anything, just a couple of secondary air codes that have been around for years.



From numerous threads it appears that this indicates a bad intake or exhaust cam, and most of the threads describe an intake cam, so I found that I can get an intake cam position sensor tomorrow morning, unknown brand though.



I am supposed to drive two friends to a mountain biking/camping trip tomorrow, so of course it picks today to fail! But with a little luck I will have it running by lunchtime tomorrow.



Any other suggestions on things to check while I am just sitting here with the car? Is it possible that I am barking up the wrong tree? I can actually drive it, it's just very slow, and I imagine probably not particularly good to drive it right now. I'm just glad it doesn't appear to be anything actually broken, I was thinking to myself that it felt a lot like a timing problem as I was driving it, and kept thinking a bad timing chain tensioner must have caused the chain to skip a tooth.