For 1990-2009 cars

Problem | Action
--- | ---
Worn struts | Inspect front struts. Refer to Suspension Strut and Shock Absorber Testing - On Vehicle in Suspension General Diagnosis.
Alignment out of adjustment | Measure wheel alignment. Adjust as necessary. Refer to Wheel Alignment Measurement in Wheel Alignment.
Tire lead or pull | Inspect the tires. Refer to Radial Tire Lead/Pull Correction in Tires and Wheels.
Weak or broken springs | Inspect for weak or broken springs. Replace as necessary. Refer to Strut, Strut Component, and Spring Replacement in Front Suspension or Strut Disassemble/Assemble Repair in Rear Suspension.