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Home >> Buick >> 2002 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.1L Engine >> Inspection/Maintenance Procedures >> Inspection/Maintenance Complete System Set Procedure >> Conditions For Running Test (Cold Start)
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Conditions For Running Test (Cold Start)

Ensure vehicle meets the following conditions before performing procedure:

Test will initiate only after a cold start. A cold start is considered when engine coolant temperature is less than 35°F (2°C).