A/C System Performance

2001 Mitsubishi Montero XLSSECTION A/C System Performance
  1. 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.
  2. 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)
RENDER: 1.0x

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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.