Q: Stutter on acceleration, and noise from under the hood.

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When I start the car it make an abnormal fan/"errrr" sound when idling. When it's idling the noise will come and go. Also makes that sound when accelerating. When I accelerate from a stop the car will hesitate a little until it gets going. There is no loss of power, but just the hesitation. A couple months ago I got the 100,000 tune up, and TPS relearn, because I was told it was a good chance that would fix the problem. I also just had the camshaft sensor replaced last week, atleast was told that it was. The check engine light is on as well with codes P0011 and P0746. I'm now starting my own in depth research before I take it anywhere else to pay to have it looked at.

My car has 149000 miles.
My car has an automatic transmission.

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