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JimG Z4 · 08-12-2014, 03:45 PM

Possible causes
- Low coolant level
- Faulty Engine Coolant Temperature Sensor
- Stuck or leaking thermostat
- Engine Coolant Temperature Sensor harness is open or shorted
- Engine Coolant Temperature Sensor circuit poor electrical connection

08-12-2014, 03:45 PM	#2
JimG Z4 New Member 0 Rep 15 Posts Drives: 2004 Z4 2.5i Join Date: Jul 2014 Location: Viera, FL iTrader: (0)	Possible causes - Low coolant level - Faulty Engine Coolant Temperature Sensor - Stuck or leaking thermostat - Engine Coolant Temperature Sensor harness is open or shorted - Engine Coolant Temperature Sensor circuit poor electrical connection
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