I got this car from a friend. I was installing a camber kit. All went fine. Now it starts up and just dies. It cannot hold an ilde. It's a DA9, the check engine light comes on and it idles so bad when it does hold and idle, at around 400-700rpm. I need to get it running good again. When it starts up the belts screech like theres no tomorow and it runs rough. When you give it gas they screech bad until about 2500rpm then they get back to normal. Other then the idle the car is fine...Can anyone help me?

 

Car is throwing code 4: Crank position sensor?

Why would it all of a sudden fail?