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Discussion Starter · #1 ·
It is my first post in the community and I hope I get some help. I have e39 2000 with 360k milage, M52TU dual VANOS.

I got a p0340 fault code without check engine light, the car sometimes runs perfectly well and sometime it is a nightmare to drag and start and it feels like the horsepower and torque have a significant drop. Once it does like that I used to switch off/on the engine and it becomes better but still not perfect. Got the CPS intake and exhaust and crankshaft sensors replaced with Genuine BMW but still I have same problem. Anyone can kindly help here? I wonder if this has something to do with the VANOS? I am pissed off big time trying to get it diagnosed properly but in vain.

Thanks.
 
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