I'm a newbie and apologize in advance if this has been covered. My son has a 2005 mustang 6 cylinder, he was riding down the interstate the other day with the cruise control set at 80 and when he came upon slower traffic he tapped the brake and the car slowed down all the lights on his dash come on and the power steering went out, luckily he was able to pull off of the interstate. He started it up after it set for a few minutes and he said the idling was fluctuating and it's like it wouldn't...

Question for the experts