How do you replace rear coil springs on a 1996 Ford Aerostar?

To replace the rear coil springs on a 1996 Ford Aerostar, first, safely elevate the vehicle and support it with jack stands. Remove the rear wheels, then detach the shocks and the lower control arm to allow for suspension movement. Use a spring compressor to safely compress the old coil springs, then remove them from the control arm and install the new ones. Finally, reassemble the suspension components, ensuring everything is properly torqued before lowering the vehicle back to the ground.