Worn struts

Inspect front struts. Refer to Suspension Strut and Shock Absorber Testing - On Vehicle in Suspension General Diagnosis.

Alignment out of adjustment

Inspect wheel alignment , adjust as necessary. Refer to Wheel Alignment Measurement in Wheel Alignment.

Variable effort system malfunction

Inspect variable effort steering system. Repair as necessary. Refer to Diagnostic Starting Point - Variable Effort Steering in Variable Effort Steering System.

Weak or broken springs

Inspect for weak or broken springs. Replace as necessary.

Refer to Strut, Strut Component, and Spring Replacement in Front Suspension.