I got an '07 mustang v6 and my car has the shakes. I dont know what it is but i feel considerable shaking when i'm at a stop light or whatever. Just wondering whether anyone else experienced this. I also have a funny squeaking noise coming from the engine bay. This noise happens only as i drive my car for like 20 min or so and then it goes away but man its annoying and embarrassing. its a loud screetching noise. anyone have any suggestions of what might be wrong????

 

Get your car to the dealer asap or a repair shop.Im positive what happed is the harmonic balancer came apart(the rubber molding inside).I cant count how many of these ive replaced on 4.0 sohc motors,its very common.If you want to check on it yourself,look at your bottom pully and feel around in the pullys hole where the bolt is at.feel around in there and you will fell the outer part move around.Are you still under 3/36?Hope this helped.