Thanks. Well the photo of that hose in question is below. I looked in the FSM yesterday and it mentioned what it was called, but I already forgot. lol. It runs to the rear valve cover.
I don't think it was mentioned above, but if the o2 sensor was bad (or lazy) would my service engine soon light be on? I checked my MPG computer today and I am averaging 18.0 mpg and that was right on with my own calculation by using the trip computer/gallons to refill, so that thing is pretty accurate. That MPG is about 75% highway driving at 65 mph.
Another thing is that when I turn my car off when the engine is hot, I noticed a noise, like a "robot" was operating. One day I had the hood up and was running the car, shut it off and heard it again and it is coming from the cylinder thing in the pic below. I think it is the TPS? Anyway, it will make a whirring noise for about 5 seconds and that arm will move back and forth. Also it seems like when the engine is hot and started, the rpms kick up and then go down. Is that normal? Today it did that and I was too quick to put in in drive and it jerked the car. I thought I would ruin my transmission. I guess it is ok though.
*I did have a nice surprise though. I didn't think that my driver window worked... today I pressed the down button and it didn't click like the others do or even like the driver window does when you press the switch to go up... I pressed it harder and viola, the window went down quickly and went up quickly. I guess the switch is going out, or something. Still I will use it until it completely breaks. lol.
Now, here is that taped up hose. I don't think this would cause the engine to knock though?
Here is that thing that sometimes goes wild when I shut the car off...