OFFICIAL WORKSHOP MANUAL PROCEDURE
COMPLAINT:
A high-pitched squeal noise may be heard in some 1992 Sonatas during right turns at low vehicle speeds or when stopped with a light load on the steering wheel to the right.
CAUSE:
Foreign material or impurity stuck in the rack and pinion control valve assembly.
CORRECTION:
Flush, air-bleed and properly refill the rack and pinion power steering system using the specified power steering fluid (ATF DEXRON II). Please use the following procedure:
* Raise the front end of the vehicle off the ground until the front wheels are free to turn.
* Disconnect the return hose from the oil reservoir cooler tube at the location shown on the next page.
CAUTION
Be careful not to spill any power steering fluid onto the alternator.
* Install a plug on the oil reservoir side as shown.
* Connect a vinyl hose to the disconnected return tube and place the other end into a large container in order to catch the flushing fluid.
* Start the engine and turn the steering wheel slowly from stop to stop (Do not hold the steering wheel against stops) while replenishing the fluid through the reservoir.
* Continue flushing until all of the old fluid, plus a minimum of 1 additional quart of new fluid, is flushed through the system.
* Unplug the pump reservoir inlet and reconnect return hose.
* Turn engine off, and fill reservoir to the full mark.
* Air bleed the power steering system using the procedure described on the following page.
* Recheck the fluid level.
* Inspect all connections for fluid leakage
* Test the vehicle to be sure the steering functions normally and the squeal noise is corrected.
AIR BLEEDING PROCEDURE:
* Disconnect the high tension cable, and while operating the starting motor intermittently (for 15 - 20 seconds), turn the steering wheel all the way to the left and to the right five or six times.
NOTE
1.
During air bleeding, replenish the fluid supply so that the level never falls below the lower position of the filter.
2.
If air bleeding is done while the vehicle is idling, the air will be broken up and absorbed into the fluid; be sure to do the bleeding only while cranking.
* Connect the high tension cable, and then start the engine (idling).
* Turn the steering wheel to the left and then to the right until there are no air bubbles in the oil reservoir.
CAUTION
Do not hold the steering wheel turned all the way to either side for longer than ten seconds.
* Confirm that the fluid is not milky, and that the level is up to the specified position on the level gauge.
* Confirm that there is little change in the surface of the fluid when the steering wheel is turned left and right.
CAUTION
*
If the surface of the fluid changes considerably, air bleeding should be done again.
*
If the fluid level rises suddenly when the engine is stopped, it indicates that there is still air in the system.
*
If there is air in the system, a jingling noise may be heard from the pump and the control valve may also produce unusual noises. Air in the system will shorten the useful life of the pump and other parts.