So I've been trying to find out why this $9400 motor has been over heating on the highway. I changed the thermostat, flushed the brand new radiator and replaced the fan clutch that the fan ate.
I found out that it was the water pump because I didn't see the EGR cooler return line flowing. So I did something brave while the engine was running and took the top radiator hose off while it was 200 deg. I first squeezed the hose to see if it was tight. No flow, not a drop. What gives?
I've been out of work for a month trying to get this dam truck rolling and all I have is a black cloud over my head. First the engine was set down on the oil pan, cracking it right were the plug is then the fan clutch wiring harness gets caught by the fan now this.
Does this sound like the water pump is out? And how? Also every time I went on the highway it does this.