Hey guys, wondering if I can get some help. 1999 Avalon 115k miles, my check engine light came on about 2 weeks ago. Seems that when I stop at a light etc. my rpm drops a little, enough to make the once smooth engine rattle a little-only noticeable by small vibrations in the car which disappear if I accelerate a little, bringing up my rpm. Also, when I release the brakes on the initial take-off(without accelerating), the car barely moves-no initial acceleration-unless I press on the accelerator. In addition, I went to autozone and received the following error code:
p1135-manufacturing control fuel air metering; pedal position sensor A circuit intermittent. I also noticed my fuel economy dropping. Any suggestions would be appreciated...

It sounds to me like it's one of the sensors on the throttle body. I'll look up the code further and post back once I find what exactly causes this code.