how can you tell if the water pump on a 2005 Honda Accord EX is working?

Asked by May 21, 2014 at 01:47 PM about the 2005 Honda Accord EX

Question type: General

The car gets hot when idling to long?

1 Answer

25

If you have a heat gun you can use that to tell if it is the thermostat or waterpump malfunctioning. When the car reaches operating temperature, temp gauge is in the middle, the thermostat should open and the temperature on both sides of the thermostat should be about equal. If the thermostat doesn't open one side will remain way hotter than the other after reaching operating temperature. If the thermostat is functioning but the car is still overheating it may be a waterpump. One thing I have found with idling overheating is that the fan is actually broken and not cycling on providing enough air. So you may want to check out this option before assuming it is the waterpump once you have ruled out the thermostat. Again, when the car reaches operating temperature the fan should kick on. You can do electrical tests of the connectors on the fan as well to verify that it is bad.

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