If your vehicle is showing steering feels jerky, binding, or catches while turning, here are the most likely causes and the parts you'll need to fix each one.
Low fluid introduces air into the power steering system, causing a jerky or pulsating feel when turning the wheel. This is usually due to a leak in the hoses, rack, or pump.
A loose, glazed, or worn belt can slip on the power steering pump pulley. This causes an intermittent loss of steering assist that feels like the wheel is catching or jerking.
The universal joints in the steering column or intermediate shaft can rust and bind up over time. This typically causes a stiff spot or catching feeling every quarter or half turn of the steering wheel.
Internal wear or failing pressure valves inside the power steering pump can cause inconsistent hydraulic pressure, leading to a jerky or heavy steering feel at low speeds.
The bearings at the top of the front struts allow the suspension to pivot when you turn. If they dry out, rust, or bind, the steering will catch and often make a popping noise.
If the front struts were recently replaced and the top mount bearing was installed misaligned, unlubricated, or over-torqued, it will bind and cause jerky steering immediately after the repair.
Internal seal failure or gear wear inside the steering rack can cause mechanical binding or inconsistent fluid pressure, resulting in a jerky feel or dead spots in the steering.