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Old 03-15-2017, 09:00 AM   #10
CSHADES
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Join Date: Nov 2015
Location: portage wi
Posts: 509
Re: Constantly replacing heater cores

You need to check your coolant for electrical current. If you have some poor grounds the current will use the coolant to make a new ground which will damage the heater core. Using a volt meter put the ground lead on one of the heater core nipples and the other in the coolant at the radiator fill point and see if it shows any voltage. If it does you need to address some grounds.
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