How can I tell if my coil springs are worn out?
One way to check the coil springs ability to support the weight of the vehicle, is to remove one of the track bars. This will allow the remaining track bar to center the axle. Before removing the track bar, take some measurements. Measure and record the distance from the bump stop to the top of the axle housing. Then remove one of the track bars. You may need to drive it around the block and give the suspension a chance to settle. Then, remeasure again. If the change in measurement is substantial, replace the coils. Or if you have 150,000 plus miles on the OEM Pathfinder coils it wouldn't hurt to change them