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Home >> Chevrolet >> 1981 >> Luv 2.2L Eng VIN S, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Catalytic Converter And Over-Temperature Control System >> Testing >> Engine Speed Sensor
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Engine Speed Sensor

Connect BLK/YEL and LT.GRN/WHT wiring terminals at speed sensor connector, using jumper wires. Start engine and check for voltage between LT.GRN and BLK terminals. Voltage should drop to zero when engine speed is over 2100-2300 RPM.

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