The Coil Spring is part of the car suspension system. We have 4 associated problem symptoms connected to it.
After driving over speed bumps or changes in road surfaces the car doesn't settle back to normal as quickly as it should. The car feels like it's carrying on bouncing long after the car has driven over the obstacle.
When looking at the car parked on flat ground it looks like it's leaning to one side, almost as if there's a large weight loaded on one side of the car. The car can also feel unstable to drive, especially in corners.
When going around corners the car feels like it drifts out more than it should, it doesn't follow the expect line through the corner and the car seems more unstable than it did.
At slow speeds there is a distinct creaking or squeaking sound coming from the corner of the car. The sound is more obvious at slow speeds and will usually be noticeable when you feel weight shift around the car when it changes direction.