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Home >> Saturn >> 1995 >> SL1 Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic System >> Information Flags >> Flag 73: Coolant Sensor Signal Unstable
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Flag 73: Coolant Sensor Signal Unstable

Flag will set if Coolant Temperature Sensor (CTS) indicates a change of more than 59°F (15°C) instantaneously. See INTERMITTENTS in TESTS W/O CODES article in the ENGINE PERFORMANCE section.

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