wow right before trading this thing in....

So I was getting ready to trade this damn thing today, go to car wash clean it up, pressure wash the undercarriage a little bit, move it to go vac it out, then drive off..... halfway home it starts to act weird, idle dropped then went back up. Fearing that I would run into the back of someone I rode the brakes all the way home. I noticed when I dropped it in neutral or park the rpms would jump up to 3k. But when I shut it off then turn it back on its fine until I drive it, it seems like the idle does not want to go down and when I am coming to a stop it does a little buck and jerk. What the hell did I do, I didn't pressure wash the engine bay or anything. I've checked for vaccum leaks and so on, I don't know if it is just a coincidence or if I actually hit something while pressure washing the undercarriage. I was suppose to trade this damn thing in like an hour and im ****ing PISSEDD

You most likely just got a sensor wet, and once it dries out it will be fine.

tps

hurry up and trade it...When has a dealer ever been honest with us???

You washed it before trading it in, what, are you NUTS. Whatever got wet should dry out once it gets warm and runs for a while.