Nobody likes a hard steering wheel. It’s like trying to roll a brick instead of a car. Modern cars rely on power steering to reduce the stress of slow driving. When the system ages, wears out or has adjustment problems, the help disappears. Suddenly, a simple left turn into a parking space becomes an exercise.
If you want to know why the steering wheel is hard to turn, you don’t need to go to the shop right away. You can diagnose the most common causes yourself. Let’s start with the basics. fluid levels. leak. belt.
First check the power steering fluid level
A low fluid level is the simplest solution and the most common cause of stiff steering. The power steering pump requires hydraulic pressure to operate. If the tank is empty or the fluid level is low, the pump will cavitate or not be able to push fluid through the line.
Locate the power steering fluid reservoir. The cap usually has a steering wheel icon. Wipe the lid clean before opening to prevent debris from entering. Check the fluid level by the “Full” or “Cold” markings on the side of the dipstick or clear reservoir.
If the fluid level is low, add the correct type of fluid according to the instructions in the owner’s manual. Using the wrong fluid can damage the seal. If you find yourself adding fluid every few weeks, that’s a sign of a leak. Don’t ignore it. Dry pump gets stuck.
Check the hoses for leaks or damage
If the fluid level is low, trace where it went. Raise the front of the car with jacks and jack stands. Never trust just one Jack. Look at the line from the pump to the steering rack.
Check for damp spots. When the liquid dries, it often leaves behind a reddish-brown stain. Heat and age can cause hoses to crack under the hood. Fittings can loosen over time.
Look at the steering rack itself. Seals in rack and pinion assemblies are a common point of failure. If you drive an older car with a recirculating ball, check those boots.
“If you need to add power steering fluid frequently, your car’s steering system may have a leak.”
Leaking rack gaskets are not a quick fix. In many cases, the entire rack must be replaced or rebuilt using a kit. But identifying leaks can save you from buying unnecessary parts.
Listen to the belt to check for tension
In some cases, the pump may be good, but what uses it may be bad. The serpentine belt (or drive belt) drives the power steering pump. It also works with the alternator, AC compressor and water pump of most modern vehicles.
Put your friend in the driver’s seat. Start the engine. Have them turn the handle all the way to the left, then all the way to the right and hold it there for a few seconds. This loads the pump to the maximum.
Listen carefully. Do you hear loud squeal or screech? This sound usually means that the belt is loose and slipping on the pulley. It is also possible that the belt is glazed or worn. Loose belts must be tightened. Worn belts must be replaced.
According to Firestone, these belts typically last from 60,000 to 100,000 miles, Firestone said. If it is close to this mark, replace it preemptively. If the belt breaks, the power steering and charging system will no longer work. This is the situation with the roadside tow truck.
Contact an expert
If the fluid is full, there are no obvious leaks, and the belt is tight, there may be an internal problem. The pump itself may be faulty. The inner blade may wear. The pressure relief valve may be stuck.
Alternatively, there may be an internal problem with the steering column or rack internals. Checking these parts requires lifting the car safely and often disassembling the front parts.
If fluids and belts are ruled out, contact a mechanic. They have the tools to pressure-test the system and locate where the assist is dropping off.
Power steering troubleshooting frequently asked questions
What causes the power steering to stop working completely?
In addition to a low fluid level, a power steering pump failure or severe leak that results in a complete loss of oil pressure can also cause the system to stop the system. Alignment issues can also make the steering feel unusually heavy.
