My heater core keeps blowing. I have replace it 5 times in the last year and a half. we have also replaced the thermostat.
Mar 18, 2013 at 9:56 PM
Heater core keeps going bad?
2000 FORD WINDSTAR
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ASEMASTER6371
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Good morning,
Using a voltmeter, please check for voltage in the coolant. Take your red lead and put it in the coolant and the black lead to good chassis ground. Please give me the voltage.
https://www.2carpros.com/articles/how-to-use-a-voltmeter
Check your pressure cap as well. If there is too much pressure, it will fail the heater core.
https://www.2carpros.com/articles/radiator-pressure-test
https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars
https://www.2carpros.com/articles/replace-heater-core
I attached the procedure below for you as well.
This could be from the bad ground but the test in the coolant will tell.
Please keep me updated with the results.
Roy
Using a voltmeter, please check for voltage in the coolant. Take your red lead and put it in the coolant and the black lead to good chassis ground. Please give me the voltage.
https://www.2carpros.com/articles/how-to-use-a-voltmeter
Check your pressure cap as well. If there is too much pressure, it will fail the heater core.
https://www.2carpros.com/articles/radiator-pressure-test
https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars
https://www.2carpros.com/articles/replace-heater-core
I attached the procedure below for you as well.
This could be from the bad ground but the test in the coolant will tell.
Please keep me updated with the results.
Roy
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Sep 10, 2021 at 1:16 AM
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