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Rack and Pinion Replacement
What is a rack and pinion?
The rack and pinion steering gear is a newer and lighter steering gear, and may be hydraulically assisted, electrically assisted or unassisted. When the steering wheel is turned, the steering gear pushes or pulls the wheels in the requested direction.
How does rack-and-pinion work?
The steering rack is located between the front wheels, and attaches them to the steering wheel. The inner and outer tie rod ends link the ends of the steering rack to the steering knuckles, which is what the car's wheels attach to. When the steering wheel is turned, the steering rack forces all of these components out on one side, and pulls them in on the other side.
A failing steering rack may clunk when turning or when going over bumps.
Turning easily in one direction, but with difficulty in the other, is an indication of a problem with the steering rack.
Estimates last updated January 28, 2026
1990 Mercury Topaz Rack and Pinion Replacement Cost
The average cost for a 1990 Mercury Topaz Rack and Pinion Replacement is between $1,154 and $1,490.
Labor costs are estimated between $720 and $1,056 while parts are typically priced around $434.
This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.
For a more accurate estimate based on your location, use our Fair Price Estimator below.
What are the symptoms related to a bad steering rack?
Rack-and-pinion problems typically come with the following symptoms:
Power steering fluid leaks
A whining or clunking noise when turning the steering wheel
Difficulty steering at low speeds, or a loose sensation when turning the wheel
Small power steering leaks won't prevent the vehicle from driving, but when fluid cannot be added quickly enough to keep the pump full, a tow truck is recommended to avoid damaging the fuel pump and steering gear.
How often do steering racks need to be replaced?
As any system that carries high pressure will, the system will eventually fail from normal wear and tear, but this should be well into the serviceable life of the vehicle. For most vehicles, the power steering system will last well over 100,000 miles before any failures occur.
Keeping the power steering fluid fresh and the system free of contaminants is key to ensuring long power steering system life. That's why sticking to your regularly scheduled maintenance, detailed in your owner's manual, is so important.
How are steering rack issues diagnosed?
Since most power steering issues generate the same symptoms, it can be difficult to diagnose one part without checking the condition of the whole system. A technician will check for leaks, examine the belt tension and listen for problems with the power steering pump. If these all check out. After that, if no other issues are found, the steering rack will be suspected of failure, if the symptoms dictate.
Problems with the power steering control module (where applicable) can imitate problems with the steering rack. Be sure that the problem has been properly diagnosed before replacing an expensive steering rack.
How is a steering rack replaced?
Replacing the steering rack involves a fair amount of disassembly — fluid must be drained, hoses and electrical connectors must be removed, and the rack has to be unbolted from the car.
Replacement is the opposite order of operations, followed by standard fill and bleed procedures for power steering systems.
Get a RepairPal Fair Price Estimate® for your 1990 Mercury Topaz.
Our Fair Price Estimate will help you avoid overpaying based on your car, needed service, and labor rates in your area.
