Hi all! I am new to this forum. So if there is a similar post about this issue, I sure would appreciate some direction. I didn't find anything similar in my searches.
I have a 2004 Durango 5.7L Hemi. Has a fresh engine overhaul. All new internals. New water pump, new thermostat, new radiator, new radiator cap. Upper & lower hoses were reused but checked out ok. The issue I am having makes no sense to me.
Upper Radiator Hose is swelling up like a balloon after running a couple minutes. It's rock hard & swollen like it's about to pop. It's cold to the touch (even with the engine at operating temperature). Have also found it collapsed when cold one day as well. Lower hose is fine, yet still cold to the touch as well. Engine does NOT overheat. Stays steady at 180°F. (Both at the dash guage and on diagnostic scanner). I have had 2 random leaks (I suspect the water pump), likely due to the excessive pressure building at the upper hose. I have replaced the radiator cap once, thinking it wasn't regulating pressure properly & checked for restrictions to the expansion tank, there are none. Still having the same issue with excessive pressure in the upper hose.
Any ideas?
Shouldn't the upper hose be hot when at normal operating temp?
Can provide pics if needed.
I have a 2004 Durango 5.7L Hemi. Has a fresh engine overhaul. All new internals. New water pump, new thermostat, new radiator, new radiator cap. Upper & lower hoses were reused but checked out ok. The issue I am having makes no sense to me.
Upper Radiator Hose is swelling up like a balloon after running a couple minutes. It's rock hard & swollen like it's about to pop. It's cold to the touch (even with the engine at operating temperature). Have also found it collapsed when cold one day as well. Lower hose is fine, yet still cold to the touch as well. Engine does NOT overheat. Stays steady at 180°F. (Both at the dash guage and on diagnostic scanner). I have had 2 random leaks (I suspect the water pump), likely due to the excessive pressure building at the upper hose. I have replaced the radiator cap once, thinking it wasn't regulating pressure properly & checked for restrictions to the expansion tank, there are none. Still having the same issue with excessive pressure in the upper hose.
Any ideas?
Shouldn't the upper hose be hot when at normal operating temp?
Can provide pics if needed.