My heater blows cold and keeps over heating.

Asked by Feb 09, 2015 at 05:41 PM about the 2000 Land Rover Discovery Series II 4 Dr STD AWD SUV

Question type: Maintenance & Repair

1999 Land Rover Dis2.

4 Answers

545

both symptoms indicate a low coolant level. Losing your heat is an early sign of low coolant. the heater is higher than the radiator so it will get air in it first and stop being hot. Also low coolant can either be a cause of over heating or a result as in the unfortunate case of a bad head gasket.

1 people found this helpful.

I have no water in the oil and have lots of antifreeze don't understand why it keeps overheating

545

Another less likely problem can be a faulty water pump. Low flow or no flow will cause both an other heat problem and since no coolant is being pumped through the heater core you will have no heat. An obstruction in the radiator would cause an over heat but not poor heat from the heater and coolant would still flow through the heater. you need to establish weather the coolant is flowing sufficiently.

1 people found this helpful.

thank you for all of your help is there a way I can determine whether or not my water pump is working correctly

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