Pontiac Workshop Service and Repair Manuals

Manifold Pressure/Vacuum Sensor: Electrical Specifications

COOLANT TEMPERATURE SENSOR (CTS)

100°C (212°F) .................................................................................................................................................................................................... 177 Ohms
90°C (194°F) ...................................................................................................................................................................................................... 241 Ohms
80°C (176°F) ...................................................................................................................................................................................................... 332 Ohms
70°C (158°F) ...................................................................................................................................................................................................... 467 Ohms
60°C (140°F) ...................................................................................................................................................................................................... 667 Ohms
50°C (122°F) ...................................................................................................................................................................................................... 973 Ohms
40°C (104°F) .................................................................................................................................................................................................... 1459 Ohms
30°C (86°F) ...................................................................................................................................................................................................... 2238 Ohms
20°C (68°F) ...................................................................................................................................................................................................... 3520 Ohms
10°C (50°F) ...................................................................................................................................................................................................... 5670 Ohms
0°C (32°F) ........................................................................................................................................................................................................ 9420 Ohms

-10°C (14°F) ..................................................................................................................................................................................................... 16180 Ohms
-20°C (-4°F) ...................................................................................................................................................................................................... 28680 Ohms
-30°C (-22°F) .................................................................................................................................................................................................... 52700 Ohms
-40°C (-40°F) .................................................................................................................................................................................................. 100700 Ohms

INTAKE AIR OR MANIFOLD AIR TEMPERATURE SENSOR

100°C (210°F) .................................................................................................................................................................................................... 185 Ohms
70°C (160°F) ...................................................................................................................................................................................................... 450 Ohms
38°C (100°F) .................................................................................................................................................................................................... 1800 Ohms
20°C (70°F) ...................................................................................................................................................................................................... 3400 Ohms
4°C (40°F) ........................................................................................................................................................................................................ 7500 Ohms
-7°C (20°F) .................................................................................................................................................................................................... 13,500 Ohms
-18°C (0°F) .................................................................................................................................................................................................... 25,000 Ohms

-40°C (-40°F) ................................................................................................................................................................................................. 100,700 Ohms

THROTTLE POSITION SENSOR

Signal Voltage...............................................................................................................................................................................  0.33 - 0.46 volts @ idle

 .......................................................................................................................................................  Approx. 4.0 volts @ wide open throttle

OXYGEN SENSOR

Signal Voltage [1] .........................................................................................................................................................................  Varying 0.3 - 0.6 Volts

[1]

Engine at normal operating temperature, feedback system operating normally in closed loop.