Sudden Running Poorly and Then Not?

[razorboy]

Hey Lads,

Troubleshooting what could be an intermittent issue on the X5. Getting frustrated with this truck. It seems to line up work so that as soon as I fix one thing (recent waterpump replacement - 2nd in less than a year), the next job is ready to go. My wife can't stand the thing and doesn't trust it to go anywhere and I am starting to wonder myself.

So for a while now the truck would occasionally oscillate around idle. Stopped at a light and the idle would go up and down by a few hundred RPM. Nothing dramatic but annoying. This was only occasionally. Most times the idle is rock solid.

Again, very occasionally the truck would stall out going around corners. Usually due to rapidly lifting the gas and applying the brake. Only happens once in a while and I found that it would not do it when the truck was in the sport mode on the shifter although this consumes more fuel and the shiftpoints are higher. Not what I want for around town driving.

So today I was bringing my son back from school and pulled up to a stop sign and the idle starting doing its thing but it felt like the truck was going to stall out. I gave it a shot of gas and it sounded like it was running on 4 cylinders and immediately the check engine light came on. As I left the stop sign all the way back to my house, it was running on what felt like 4 or 5 cylinders and stalled out going around the corner to my house. I started the truck and it was the same. Nursed it back to the driveway.

I got my scanner out and it has a P0011
A camshaft Position
Timing Over advanced or system performance Bank 1

I left the truck for a couple of hours and just went out and it started perfectly and idled perfectly. The issue has disappeared. Check engine light is still on though.

Does this sound literal meaning that I may have a faulty cam position sensor?

I know how these codes sometimes don't point directly to the problem. Just wondering if this is an issue that others have experienced.

Thanks
Bernie