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 MANUALSMITSUBISHI2001MONTERO XLSREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSMANUAL A/C-HEATER SYSTEMSSYSTEM TESTSA/C SYSTEM PERFORMANCE
2001 Mitsubishi Montero XLS
A/C System Performance
2001 Mitsubishi Montero XLSSECTION A/C System Performance
- Park vehicle out of direct sunlight. Install A/C gauge set. Start engine and allow it to idle at 1,000 RPM. Turn A/C on. Set A/C controls to recirculated air, panel (vent) mode, and full cold setting.
- Set blower/fan on high speed. Close doors and windows. Insert thermometer in center vent. Operate system for 20 minutes to allow system to stabilize. Measure temperature at center vent. See A/C PERFORMANCE SPECIFICATION (MONTERO 2000) , A/C PERFORMANCE SPECIFICATION (MONTERO 2001) or A/C PERFORMANCE SPECIFICATION (MONTERO SPORT) table.
A/C PERFORMANCE SPECIFICATION (MONTERO 2000)
| Ambient Temp, °F (°C) | Discharge Air Temp. °F (°C) | High Side Pressure psi (kg/cm2 ) | Low Side Pressure psi (kg/cm2 ) |
|---|---|---|---|
| 70 (21) | 37.4-42.8 (3.0-6.0) | 139-203 (9.8-14.3) | 14-31 (1.0-2.2) |
| 80 (26.7) | 37.4-44.6 (3.0-7.0) | 149-213 (10.5-15.0) | 14-33 (1.0-2.3) |
| 90 (32.2) | 38.3-45.5 (3.5-7.5) | 161-225 (11.3-15.8) | 16-34 (1.1-2.4) |
| 100 (37.8) | 39.2-46.4 (4.0-8.0) | 181-253 (12.7-17.8) | 20-38 (1.4-2.7) |
| 110 (43.3) | 40.1-47.3 (4.5-8.5) | 189-276 (13.3-19.4) | 23-40 (1.6-2.8) |
A/C PERFORMANCE SPECIFICATION (MONTERO 2001)
| Ambient Temp. °F (°C) | Discharge Air Temp. °F (°C) | High Side Pressure psi (kg/cm2 ) | Low Side Pressure psi (kg/cm2 ) |
|---|---|---|---|
| 68 (68) | 38-42 (3.5-5.5) | 152-181 (10.7-12.7) | 17-20 (1.2-1.4) |
| 77 (25) | 38-42 (3.5-5.5) | 152-181 (10.7-12.7) | 17-20 (1.2-1.4) |
| 95 (35) | 40-44 (4.5-6.5) | 203-232 (14.3-16.3) | 19-22 (1.3-1.5) |
| 104 (40) | 42-46 (5.5-7.5) | 239-268 (16.8-18.8) | 23-26 (1.6-1.8) |
A/C PERFORMANCE SPECIFICATION (MONTERO SPORT)
| Ambient Temp. °F (°C) | Discharge Air Temp. °F (°C) | High Side Pressure psi (kg/cm2 ) | Low Side Pressure psi (kg/cm2 ) |
|---|---|---|---|
| 68 (20) | 40.1-43.7 (4.5- 6.5) |
120-164 (8.4-11.5) | 14-28 (1.0-2.0) |
| 77 (25) | 41.0-44.6 (5.0-7.0) | 145-189 (10.2-13.3) | 15-30 (1.1-2.1) |
| 95 (35) | 45.0-48.6 (7.2-9.2) | 174-218 (12.2-15.3) | 18-33 (1.3-2.3) |
| 104 (40) | 47.3-50.9 (8.5-10.5) | 225-268 (15.8-18.8) | 21-36 (1.5-2.5) |
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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.