1992 Mitsubishi Montero LSFACTORY OEM SERVICE PROCEDURE

Engine Controls - Sensor Operating Range Charts: Introduction: Notes

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. For connector and terminal identification, see WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.
AIRFLOW METER HERTZ TEST (1)

Condition Hz
Diamante
700 RPM 25-50
2000 RPM 65-105
Eclipse
1.8L
700 RPM 25-40
2000 RPM 67-88
2.0L
750 RPM 25-50
2000 RPM
Non-Turbo 70-90
Turbo 60-85
Expo/Expo LRV
1.8L
750 RPM 23-49
2000 RPM 51-91
2.4L
750 RPM 34-60
2000 RPM 70-110
Galant
SOHC
750 RPM 25-50
2000 RPM 70-130
DOHC
750 RPM
Non-Turbo 25-50
Turbo 30-50
2000 RPM
Non-Turbo 60-90
Turbo 50-80
Mirage
1.5L
750 RPM 30-45
2000 RPM 80-110
1.6L
750 RPM 27-33
2000 RPM 60-80
Montero
700 RPM 27-48
2000 RPM 60-100
Pickup
2.4L
750 RPM 40-60
2000 RPM 85-105
3.0L
700 RPM 25-45
2000 RPM 70-90
Precis
750 RPM 27-33
2000 RPM 60-80
3000GT
700 RPM 25-50
2000 RPM 70-100
(1) Measure hertz frequency with Multi-Use Tester (MUT).
AIRFLOW METER VOLTAGE TEST

Condition Volts
Colt, Colt 200, Ram-50 & Summit
750-2000 RPM 2.2-3.2
Stealth
700 RPM 0-1.0
3000 RPM 6.0-9.0
BAROMETRIC PRESSURE SENSOR VOLTAGE TEST

Altitude Ft. (m) Volts
Colt, Colt 200, Summit
0 (0) 3.7-4.3
3937 (1200) 3.2-3.8
Colt Vista, Summit Wagon
0 (0) 3.7-4.3
3937 (1200) 3.2-3.8
Ram-50, Stealth & 3000GT
0 (0) 3.7-4.3
3937 (1200) 3.2-3.8
BAROMETRIC PRESSURE SENSOR VACUUM TEST

Altitude Ft. (m) In. Hg
Eclipse, Mirage & Precis
10 (0) 30
1969 (600) 28
3937 (1200) 26
5906 (1800) 24
Diamante, Expo/Expo LRV & Galant
10 (0) 30
1969 (600) 28
3937 (1200) 26
5906 (1800) 24
Montero & Pickup
10 (0) 30
1969 (600) 28
3937 (1200) 26
5906 (1800) 24
COOLANT TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C) Ohms
Eclipse
68 (20) 2200-2600
176 (80) 264-328
Galant, Mirage, Ram-50 2.4L & Pickup 2.4L
32 (0) 5900
68 (20) 2500
104 (40) 2700
176 (80) 300
All Others
32 (0) 5800
68 (20) 2400
104 (40) 1100
176 (80) 300
EGR TEMPERATURE SENSOR RESISTANCE TEST (1)(2)

Temperature °F (°C) Ohms
122 (50) 60-83
212 (100) 11-14
(1) Measure resistance across disconnected sensor terminals.
(2) Specifications apply to all models except Montero.
INTAKE AIR TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C) Ohms
Precis
32 (0) 5400-6600
68 (20) 2300-2970
176 (80) 310-430
All Others
32 (0) 6000
68 (20) 2700
176 (80) 400
Factory Service Tools

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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.