The other night at work I clipped the curb by accident. Everything seemed fine until I came out on lunch and sat in the car with the ac on to get outta the heat for a few mins. My throat and eyes started burning so I shut off the ac and the car stuttered for a second and then revved up so I shut it off. Then smoke started pouring from the hood. Turns out my coolant was pouring all over my cat. I patched the hole which looked like a hose went there but I didn't/don't know. Put water in it and attempted to leave the parking lot. I pushed in the clutch and it started to rev up on its own. It also was taking off by itself and when I put it in neutral it tacked again so I had to shut it off and coast to the lights. It basically was speeding up by itself and I was scared all the way home. Today I replaced the reservoir and attempted to burp it, it tacked up and I shut it off immediately, I didn't wanna blow the engine. I also removed the throttle body and everything seemed fine so I put it back. If ya'll have any clue what's going on Please help me. Thanks for viewing my long story.