Steering Gear Grunt/Shudder Test
1. Start and run the vehicle to operating temperature.2. Set engine idle speed to 1200 rpm.
3. CAUTION:
Do not hold the steering wheel against the stops for more than three to five seconds at a time. Damage to the power steering pump will occur.
Rotate the steering wheel to the RH stop. then turn the steering wheel 90° back from that position. Turn the steering wheel slowly in a 15° to 30° arc.
4. Turn the steering wheel another 90°. Turn the steering wheel slowly in a 15° to 30° arc.
5. Repeat the test with power steering fluid at different temperatures.
6. If a light grunt is heard or a low (50-200Hz) shudder is present, this is a normal steering system condition.