For 1990-2009 cars

1. Inspect and adjust the tire pressures to the pressures shown on the Tire Placard.
2. Note the load conditions under which the vehicle is normally driven.
3. Before proceeding to the next step, ride in the vehicle with the owner in order to ensure that you understand the complaint.
4. Test each strut damper in turn by quickly pushing down, then lifting up the corners of the bumpers. Use the same amount of effort on each test. Note the resistance on the compression and the rebound for each strut. Compare the resistance with a similar vehicle with acceptable ride quality. The struts on both vehicles should have the same resistance.