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Pontiac
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1989
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Firebird V6-231 3.8L
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Repair and Diagnosis
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Specifications
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Electrical Specifications
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Ignition Timing
Ignition Timing
IGNITION TIMING
These engines use DIS (Direct Ignition System) systems, and Timing is non-adjustable.
THROTTLE POSITION SENSOR
Voltage
.40 +/- .05 volts