Electronic: Other Lincoln LS I

NO COMMUNICATION WITH FEM

Possible source of problem may be: blown fuses, faulty wiring or faulty FEM. See TEST A: NO COMMUNICATION WITH FEM under SYMPTOM TESTS.

STEERING IS VERY DIFFICULT/VERY EASY

Possible source of problem may be: power steering pump, power steering linkage, steering pivot or steering gear. See TEST B: STEERING IS VERY DIFFICULT/VERY EASY under SYMPTOM TESTS.

ENGINE STALLS WITH STEERING WHEEL ROTATION DURING PARKING

Possible source of problem may be: faulty wiring or pressure switch on variable assist.

POWER STEERING PUMP NOISY

Possible source of problem may be: low fluid level and/or fluid leaks, plugged reservoir filter or faulty pump. Check for leaks and check fluid level. Replace reservoir or replace pump.

SYSTEM BACKPRESSURE

Possible source of problem may be: faulty pump, faulty steering gear, faulty hoses or fittings. Perform HYDRAULIC SYSTEM PRESSURE TEST under SYSTEM TESTS.

HYDRAULIC SYSTEM BLEEDING

Note. Noise originating from power steering system may be caused by air trapped in system. To eliminate pump whine condition, bleed system.

1. Fill pump reservoir. Operate engine until power steering fluid reaches normal operating temperature. Stop engine. Recheck fluid level. Add fluid as necessary. Repeat procedure until fluid level stabilizes.
2. Turn off electronic suspension. Switch is located in left side of trunk. Raise and support vehicle so front wheels are off ground. Start engine. Turn steering wheel from side to side several times. Avoid holding wheel in full left or right lock position. Fluid level should remain visible.
3. Return wheels to center position. Operate engine for 2-3 minutes. Road test vehicle. Recheck fluid level. Fluid containing air has milky appearance. All air should be eliminated to obtain normal steering.
4. Carefully remove fluid reservoir cap. Check and fill reservoir to FULL COLD mark. Disconnect and ground ignition coil lead.
5. Crank engine while turning steering wheel from lock to lock. DO NOT hold wheel in full lock position. Add fluid if necessary. Attach coil lead. Install vacuum pump onto reservoir.
6. Start engine. Install vacuum adapter and apply 20-25 in. Hg vacuum to reservoir for about 3 minutes with engine idling. As air is purged from system, pump whine will tend to decrease. Maintain specified vacuum.
7. Release vacuum. Check fluid level. Start engine. Turn steering wheel from side to side while checking for leaks. If pump whine is severe, repeat procedure until all air is removed.

POWER STEERING PUMP BELT

Belt tension is adjusted automatically. With belt installed, tensioner should be in center of travel between stops. If tensioner is not in center of travel, belt is worn or incorrect belt is installed. Replace belt if necessary.

POWER STEERING PUMP

Note. Manufacturer does not recommend disassembly of power steering pump. If service is required, replace pump as an assembly.