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  1. #1
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    Member No: 184801 driftedwolf is an unknown quantity at this point driftedwolf's Avatar
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    318i se cooling system

    i have a 318i se its a year 2000. after 20 mins of driving the temp suddenly goes up and the red warning light comes on after less than 30 seconds the temp goes back down to normal , 10 mis later it does the same thing. i have changed the thermostat but it again keeps doing it. there is no oil or water cross contamination so i think i have ruled out head gasket ( ok i hope i have ) i have noticed that the top hose from the rad gets hot but the bottom remains very cool. could it be the water pump has failed ? any ideas please


  2. #2
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    Darien, CT, United States
    Member No: 19448 dembooks is an unknown quantity at this point dembooks's Avatar
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    318i se not cooling system

    very large trapped air pocket

    or a failed water pump

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