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Cadillac
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1990
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Allante F7/ME9
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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ECM DTC EO53: Distributor Signal Interrupted
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Failure Conditions
Failure Conditions
Engine speed greater than 568 RPM followed by no distributor reference pulses for .4 seconds.