Parts for your 1999 Toyota Crown-Power steering pump

1999 Toyota Crown Power Steering Pump — What It Does and How to Look After It

Based on Toyota technical literature for the S170-series Crown (1999–2003) — including the Toyota Crown Repair Manual (Chassis & Body, Steering: Power Steering Pump [Vane Type]), Toyota New Car Features (S170), and the Toyota Electronic Parts Catalog (Steering Group 44: Pump Assy, Vane) — the 1999 Toyota Crown is fitted with a belt-driven hydraulic power steering pump. So yes, a power-steering pump is used on this model and it’s a relevant service item.

The power steering pump on a 1999 Toyota Crown supplies hydraulic pressure to the steering gear, taking the hard yakka out of low-speed manoeuvres and parking. It’s a vane-type, engine-driven unit that meters flow with engine speed, keeping the steering light and predictable without feeling vague on the open road. When it’s healthy, the wheel turns smoothly and the front end tracks with minimal effort.

Typical signs that the pump or system needs attention include heavier-than-normal steering at idle, a moan or whine that follows engine revs, reddish ATF weeping from the front of the pump or hoses, aerated/foamy fluid in the reservoir, or a steering shudder when parking. A loose or glazed drive belt can mimic pump issues too, so a quick look under the bonnet goes a long way.

Good servicing habits keep the Crown’s steering sweet:

• Use the correct fluid: high-quality ATF meeting Dexron II or Dexron III spec (as per Toyota service data for many markets). Don’t mix fluid types.
• Inspect fluid every service, flush and refill around 60,000–100,000 km or whenever the fluid turns dark or smells burnt.
• Check the pump drive belt for cracks, glazing or slack, adjust tension and replace if worn.
• Watch known leak points: pressure hose union, pump front shaft seal and reservoir/return hose. Renew O-rings and copper washers on reassembly.
• Bleed air properly after any work: wheels off the ground, engine off, turn lock-to-lock slowly, top up, then repeat with engine running.

When replacing the pump, swap the pulley if required, fit new seals/O-rings, and torque the mounting hardware to spec. Cap hoses to keep dirt out, align the pulley, verify belt tracking, and check for leaks after a short road test. If the pump only seeps, a quality reseal kit often does the trick, if it whines and sheds metallic glitter into the fluid, replacement is the smarter call. Treated right, the Crown’s hydraulic assist stays quiet, light, and reliable for years.

Popular questions about 1999 Toyota Crown power steering pumps

What fluid does the 1999 Toyota Crown power steering system use?
Most 1999 Crowns specify automatic transmission fluid meeting Dexron II or Dexron III for the power steering. Aim for a high-quality ATF and avoid mixing types or brands mid-service. System fill is typically around 0.9–1.1 litres from dry, but a routine drain-and-fill will take less — top up to the reservoir mark rather than chasing a number.

How do you bleed the power steering after pump replacement?
With the front wheels off the ground, fill the reservoir, then — engine off — turn the wheel slowly from lock to lock 15–20 times, topping up as bubbles purge. Start the engine and repeat with gentle, slow turns. Don’t hold the wheel hard against the stops. Once bubbles stop and the fluid stays clear, set the level to “HOT” or “COLD” as indicated, then recheck after a short drive.

Why is there a whining noise on cold starts?
A cold-start whine often points to aerated or low fluid, a hardened return hose drawing air, or a loose/glazed drive belt. Check fluid level and colour, snug the belt to spec, and inspect hose clamps and O-rings. If the noise persists when warm — especially with heavy steering — the pump may be worn and due for reseal or replacement.