Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI1990VAN BASE, VAN PASSENGERREPAIR AND DIAGNOSISSTEERINGMANUAL STEERINGSTEERING SYSTEM - POWERTESTINGFLUID PRESSURE TESTING
1990 Mitsubishi Van Base, Van Passenger
Fluid Pressure Testing
1990 Mitsubishi Van Base, Van PassengerSECTION Fluid Pressure Testing
CAUTION:
DO NOT leave valve on pressure gauge closed more than 10 seconds or damage to oil pump will result.
- Disconnect pressure hose from oil pump. See Fig 1 . Bleed air from system. See HYDRAULIC SYSTEM BLEEDING in this article. Start engine and let it idle. Turn steering wheel several times until temperature reaches 122°F (50°C). Set engine idle speed to 1000 RPM.
- Close and open valve to measure oil pump pressure. If not within specifications, replace pump. See OIL PUMP PRESSURE SPECIFICATIONS table. Install pressure hose. Bleed system.
OIL PUMP PRESSURE SPECIFICATIONS
| Application | psi (kg/cm2 ) | |
|---|---|---|
| Mirage | ||
| Valve Closed | 780-880 (55-62) | |
| Valve Open (Maximum) | 142 (10) | |
| Eclipse, Galant, Sigma & Van/Wagon | ||
| Valve Closed | 1067-1166 (75-82) | |
| Valve Open | 114-142 (8-10) | |
| Precis | ||
| Valve Closed | 640-740 (46-53) | |
| Valve Open | 142 (10) or less | |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.