Idle Issue (P0300), and weird noise.

Bad Boy

I had the code P0300 about two weeks ago, random engine misfire, and had it reset. The SES light just came back on again and will get the code read again to see if anything new shows up...
The idle speed is now at about 1100-1200 instead of the normal 750ish.

I dont even need to apply gas to engage 1st gear smoothly...

Also, another issue, which I believe to be irrelevant to the first... is that whenever I step on the clutch to engage 1st or 2nd gear, most of the times not always, there is a loud noticeable shatter/clunking noise that seems to come from under the car.
The clutch seems fine, but its when I step on the clutch for 1st and 2nd that it does this... I am completely oblivious to the mechanics of this area, but it sounds as if maybe the clutch and fly wheel are trying to connect but does it very roughly and sloppy type of noise. And I mean it gets loud sometimes... makes me feel like im driving a beater when it happens.


Sorry for the long post, anyone have any experience with either of these problems?