Century V6-173 2.8L VIN W FI (1987)
Throttle Position Sensor: Adjustments
Throttle Position Sensor
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Install "Scan" tool and select Throttle Position Sensor (TPS).
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With ignition "ON," adjust TPS to obtain 0.29 - 0.98 volt.
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Tighten screws, then recheck reading to insure adjustment has not changed.
