I will give that a shot. I’m getting heat to upper hose for sure. I need to check the bottom hose. I will try that this afternoon.you can inspect impeller from rear engine by pulling the hose and nipple off engine and confirm its spinning. You can also grab both front coolant lines and make sure you have heat on both hoses? I have even pulled the drivers side upper hose off with car running to check for actual flow, not just a trickle either.