5000CD Turbo (Canada) L5-2144cc 2.14L SOHC Turbo (KH) (1984)
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Coolant Temperature Sensor/Switch (For Computer): Description and Operation
Engine Coolant Temperature
Coolant Temperature Correction
Whenever the engine coolant temperature is below 5°C (41°F) and manifold pressure is below 1.0 bar, the ignition timing will be advanced from the
basic curve. This gives the air/fuel mixture more time to burn at low engine temperatures.
Example:
At 3000 RPM and a manifold pressure of 0.8 bar the basic ignition curve calls for a timing angle of 28° BTDC. If the coolant temperature is -15°C (5°
F) the ignition timing would be advanced 7° to 35° BTDC.
