N14 Cummins Heat Issue

200 is normal from my n14 in the summer time on a hard pull it will cycle 200-210 always has. In the northern winter it will run about 180. I was told these numbers were normal.

 

Called an old Shop foreman buddie of mine. He told me to have you Check 3 things one the Intercooler to see if it is Plugged up remember it is in FRONT of your radiator and if it is plugged up you are not going to get airflow thru the Radiator. He also said Check the Water Pump for a possible loose Impeller on the Shaft and it is partilly spinning on the shaft not moving all the water. Do not laugh I have seen this Personally when I pulled Wrenches at Roberson. Third he said check for Sludge in the bottom of the Radiator. BTW this man is a MASTER Cummins Mechanic and was the one that my boss brought in to Overhaul the 444 to 720+ HP I think he would know WTF he is talking about.

 

I was told that 200-210 was normal for n14 thermostats open at 210 I believe is what they told me. What temp do u think it should be running? If it runs cold all the time milage will suffer. My radiator is a year old and the truck has ran these temps since I owned it "2005" and passes oil analisis every service. It is a n14e plus 435hp. It will cut itself off and will give u a warning I believe at 225. I am thinking I may be wrong but the fan dont come on till 200.

 

I would expect him to know what hes taliking about if he inframed it. Mine is a 1999 I dont think that would make a diffrence is the fan running all the time? Is a light coming on? I would start by calling cummins and see what they say. Tom Evans at TH evans in Athens GA told me that mine was normal at those temps it realy would depend on the thermostats and the temp the fan was coming on. What temp did it run before the rebuild? Tom is a very reputable engine builder dealer and so on. If you talk to cummins let me know what they say.