View Single Post
Old 03-15-2017, 10:36 AM   #13
Edahall
Registered User
 
Join Date: May 2011
Location: Goliad, TX
Posts: 672
Re: Constantly replacing heater cores

Quote:
Originally Posted by CSHADES View Post
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.
CSHADES,

I measured voltage between the heater core nipple and the radiator and got 0.22 volts.
Edahall is offline   Reply With Quote