Help Thermostat sticking
I just bought a 2002 525i, had a few problems but recently in the morning I got in the car drove about a mile and stopped, noticed smoke coming from under the car, open the hood see smoke coming from the back of the motor, and then coolant light and going in the red. The smoke smelled like a burning wire. Not coolant, now I smell coolant and it keeps going in the red then going back to cool within a minute. Reving the engine in neutral does make it stop most times if I am driving, otherwise it stops on it's own after about a minute. Also I can hear a horrible ticking noise that I want to say maybe it's the catalic converer? I am a woman and know a lot about cars but nothing about BMW's. Please help would could be ailing my baby? I also replaced the ambient tempature sensor last week and the idiot that put it on couldn't get it on right and so it's still not working.