Steering
9 LessonsFrom rack and pinion to electric power steering — diagnose steering complaints with confidence.
Overview
The steering system translates driver input into wheel direction. This module covers rack and pinion, recirculating ball, hydraulic power steering, electric power steering (EPS), steering columns, and the components that wear out and cause complaints like wandering, pulling, and noise.
Key Components
- Steering rack and pinion
- Power steering pump (hydraulic)
- Electric power steering motor
- Tie rods (inner and outer)
- Steering column and intermediate shaft
How It Works
When you turn the steering wheel, rotational input travels through the steering column and intermediate shaft to the steering gear. The gear converts rotational motion to lateral motion, moving the tie rods, which turn the wheels. Power assist (hydraulic or electric) reduces the effort needed to turn.
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Join the Nation — FreeCommon Problems
- Tie rod end wear causing loose steering
- Power steering pump whine from low fluid
- EPS motor failure or torque sensor issues
- Intermediate shaft clunk on turns
- Rack seal leaks
Diagnostic Tips
- Dry park test — turn wheel with vehicle stationary and feel for play
- Power steering fluid should never be low — find the leak
- EPS calibration may be needed after component replacement
- Check intermediate shaft U-joints for binding
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