Crazy Devoted Member
Join Date: Jan 2010
Location: North Canton, Ohio
Model: Ford Taurus
Engine: 3.0L 12v Vulcan V6
Rep Power: 64
If the heater core was replaced because of being plugged and a full block flush with removing freeze pulls like Ford has indicated in their procedure then it could be pulling again. The blocks have been known to a lot of casting sand that will pull heater cores. I found that the pluggage I got out was mostly non magnetic material.
You may want to try to do a reverse flush with compressed air to flush the core.
Last edited by Automender12345; 01-17-2019 at 10:22 AM.