What wrong with my RPM
 

When I travel in city around 40-50 mph, my engine makes louder noise and the RPM seems stuck at 3000 for awhile before it shifts. I can feel more vibration come through the pedals and the floor. I can feel there is something unusual in the engine noise. It feels like there is not 100% performance. Hope this makes sense to you. I don't know how to describe that feeling and that noise. Like being hold back when you try to run with all force. However, when I travel at higher speed, the x5 seems fine: no vibration, no feeling of stuck RPM, no loud noise, accelerate smoothly. Does anyone have this problem before. My car has the SES on with the code P0369.

ALX5

are you driving in sport mode?

are you seeing a little shaking on the RPM's right below 3000? And do you get a SES light ?

P0369 = Camshaft Position (CMP) Sensor B Intermittent Interruption. It's probably your cam sensor. There's a couple of DIY message threads in the archives.

Thanks for the responses guys. However
1- I am not driving in sport mode. I don't have that option. Mine is 01 X5 3.0
2- I changed my cam sensors both intake and exhaust about 3 months ago. The Cleaner suggested me to change the crankshaft sensor. Have not done it yet.
3- There is no shaking on the RPM. My SES light is on.
what else can it be?

Ok I have the same symptoms on my X3.

The dealer read the fault codes and said it was my oxygen sensor. Replaced it but my problem is still there...

I will go see the dealer again later this week...