I have a v6 2000. The horn works sometimes and the window work when they feel like it. All fuses are good. Any suggestions?

 

Window motors or the Body control module I'd guess.

 

The horn will work when the car is off. When the car is on it won't honk. Help!

 

Are the windows slow going up? If so, motors. If not, I would suspect the switches on the door panel. The horn, you may need to clean the wiring connection and ground on the horn and possibly the contacts on the steering wheel.