I got a ford 1999 taurus SE, when I was changing the spark plugs and wireset in the back part of the engine it, I felt it start rolling back. I had it in park, I quickly ran to the drivers side and put the E brake on but I still don't understand why it did that.
It drove fine after that and so did the parking brake but wtf?
Read more: Why did my car start rolling on its own when changing the spark plugs?