Airflow Sensor
Located on the driver side of the engine compartment, located inline with the intake ducting between the air filter and resonance chamber.
Testing is done with engine running and again with ignition on:
Blue with Yellow stripe wire should measure 12v.
Green with Orange should measure 0v.
Green with Black should measure 1-2v key on, .9-5v engine running.
Green with Yellow and Black with Orange stripe wires should both read about 0v
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Oxygen Sensor
Oxygen sensor must reach 600 deg F before it will start to function, warm up engine before testing. Disconnect the sensor and connect sensor wire to red voltmeter probe, touch the black probe to ground. Rev engine at 4,500 rpm until meter reads about .7v (or 700 mV). Snap throttle open several times and check that the meter reads between .5-1v while enigne is accelerating and between 0-.4v when decelerating. If not as specified replace O2 sensor once the sensor has reached operating temperature voltage should change quickly when throttle is snapped, if the readings are sluggish replace the sensor.
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Filters
Low Pressure: In tank made of nylon mesh may clog intermittently if tank contains rust.
High Pressure: Mounted on passenger side firewall, paper element, fuel line connects to top and bottom.
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Coolant Temp Sensor
Oxygen sensor must reach 600 deg F before it will start to function, warm up engine before testing. Disconnect the sensor and connect sensor wire to red voltmeter probe, touch the black probe to ground. Rev engine at 4,500 rpm until meter reads about .7v (or 700 mV). Snap throttle open several times and check that the meter reads between .5-1v while enigne is accelerating and between 0-.4v when decelerating. If not as specified replace O2 sensor once the sensor has reached operating temperature voltage should change quickly when throttle is snapped, if the readings are sluggish replace the sensor.
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Intake Air Temp Sensor
The Intake Air Tempurature Sensor, commonly called the IAT is mounted in the Dynamic Chamber. The sensor works by creating a resistance which gets lower as temperature increases. To test the sensor simply measure it's resistance and the given temperatures below and see if you're values match.
