How to Replace the Springs in a Pontiac Grand Prixby Contributor
Earlier models of the Pontiac Grand Prix had MacPherson strut assemblies that could be disassembled to replace the coil spring. This guide discusses the struts on the more recent Pontiac Grand Prix, which could not be disassembled except for removal of the springs. Replacing the springs on the Pontiac Grand Prix requires some special tools. The job is difficult.
Raise the Grand Prix if necessary, block the wheels with jack stands, and remove the strut assembly from the car.
Place the strut assembly in a strut compressor and use the compressor's forcing screw to compress the spring and release the tension in the strut mount. This is potentially dangerous and should be done with extreme caution. Make certain the strut is mounted in the compressor correctly to avoid injury.
Take off the strut shaft nut and relieve the pressure on the spring in order to remove it from the strut assembly.
Inspect the strut assembly for signs of wear. Replace the worn spring with a new Pontiac certified coil spring.
Reinstall the lower insulator before installing the spring, dust shield, jounce bumper and strut mount.
Compress the strut in the strut compressor, attach and torque the shaft nut to manufacturer's specifications.
Reinstall the strut assembly in the Grand Prix and perform a safety check before driving.
- Special tools are needed to remove the spring from the strut. You can take the strut in to an automotive center to have them remove the spring, replace and reassemble the strut.
- Buy powder-coated springs which are coated with a rust proofing before the powder paint is applied and baked on. This process makes the spring much more resistant to corrosion.
- Take the pressure off the springs before disassembling. This is potentially very dangerous as the springs carry a great deal of force which is expended when their restraints are released.