Power Steering Idle-Up System Test
- Disconnect pressure hose from power steering pump. Connect in-line a pressure gauge and hoses capable of handling 300 psi (21 kg/cm2
). Also, connect a shut-off valve in-line with the pressure gauge. See Fig 1
.
- Bleed air from system by disabling ignition system and cranking engine while turning steering wheel all the way from left to right 6 times. Start engine and turn steering wheel back and forth to raise fluid temperature to approximately 122-140°F (50-60°C).
- With engine idling, gradually close shutoff valve of pressure gauge to increase hydraulic pressure. If idle speed did not increase 200-250 RPM when fluid pressure reached 213-284 psi (15-20 kg/cm2
), replace power steering idle-up switch.
- Gradually open shutoff valve. If engine speed does not return to curb idle speed between 100-284 psi (7-20 kg/cm2
), replace power steering idle-up switch. Remove testing equipment. Bleed air from system as in step 2.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA