Why is the newly replaced steering gear heavy?
3 Answers
There are several reasons why a newly replaced steering gear may feel heavy: 1. For electronic steering gears, it might be due to improper matching. For hydraulic steering gears, it could be because air hasn't been fully purged from the system. 2. The factory settings may not have been restored or reprogrammed. 3. The data curve, also known as the power assist file, hasn't been properly written into the system using a computer. Different vehicles require different power assist files. 4. Incorrect wheel alignment data. In vehicles equipped with power steering systems, the energy required for steering is normally only a small portion provided by the driver's physical effort, with the majority coming from hydraulic energy supplied by the engine-driven oil pump.
I've handled quite a few cases where the steering wheel feels heavy after power steering gear replacement. Common causes may include improper positioning during installation or insufficient lubrication. New components require a break-in period, especially for older hydraulic-assisted vehicles where air bubbles in the oil lines can reduce power assistance and make steering heavier. Additionally, if the power steering pump or steering column joints weren't inspected and cleaned, it could cause stiffness. I recommend returning to the repair shop for technicians to readjust and bleed the system, while also checking if tire pressure is normal since low pressure makes steering more strenuous. Regular maintenance of the steering system is crucial to prevent increased component wear during long-term driving. Remember, these minor issues if left unaddressed may lead to major failures and compromise driving safety.
After replacing the steering gear last year, I also experienced a heavier steering wheel. At first, I thought it was just the new component feeling unfamiliar, but later I discovered that air had entered the hydraulic system, causing insufficient power assistance. Another possibility is that the aging power steering pump wasn’t repaired at the same time, and the increased load after replacing the steering gear exposed its weakness. I suggest you first try turning the steering wheel back and forth a few times while stationary to purge any air. If that doesn’t help, check the fluid level and cleanliness. During daily driving, be gentle with your steering inputs to avoid putting extra strain on the system. A new steering gear should allow for smooth and effortless turning—don’t ignore this issue as it affects your driving experience.
