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 shutoff valve in line with pressure gauge. See Fig 1
.
- Bleed air from system by disabling ignition system and cranking engine while turning steering wheel completely from left to right several 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 does not increase 200-250 RPM when fluid pressure reaches 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 100-142 psi (7-10 kg/cm2
), replace power steering idle-up switch. Remove testing equipment. Bleed air from system as described in step 2).
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.