The hoses that are going to heater core when i squeezed them they are solid and truck overheats if i don't leave heat running and makes a noise.

SOURCE: smell antifreeze, no leaks, gurgleing behind drivers side dash.

there is air in system causing gurgling/set heater to defrost and check for sweet smell. do while stopped if core is leaking windshield will fog up and be hard to clear.

SOURCE: cooling system requires burp.

Hey Tim,

I had the same problem with my 1997 Dodge ram 5.2 liter truck. I changed the water pump and it was actually that little o-ring on the heater hose that fits into the water pump on the top right side of the water pump. Also that metal piece on the return heater hose erodes after a while and rusts because it fits inside the water pump. I changed the metal part of the heater hose and the o-ring. I even changed the thermostat because it was easy to access. After I changed all of that I still heard the water running when I would rev the engine. After further investigation, I found that my bypass hose was leaking. The leak was small so I didnt see water on the ground and when the engine was hot it would just evaporate. Changing the bypass hose was more difficult than the water pump. You have remove so much just to get at a 3 to 4 inch hose. After I changed it, I filled up the radiator AGAIN and left the radiator cap off for about 10 minutes and added coolant as the level dropped. It worked, no more water running sound. Hope this helps.
AJ

SOURCE: 2002 dodge 1500 Changed radiator, thermostat, and hoses. No heat

Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.

SOURCE: I have a 1998 Dodge Dakota 5.2/ V8 4X4 and was

Check the coolant flow control valve which should be located next to the heater core. It may be electrically or mechanically controlled. After you get the blend door and housing off and can access the heater core, bring your engine up to operating temperature, check that the coolant flow control valve works and see if the heater core heats up. If not it will be either plugged or a low coolant situation. You do not need to change out the evaporator, however it may not hurt to clean it externally with a condenser cleaner such as nubrite, and blow out with air. This would be a good time to change your cabin air filter also.

SOURCE: BOTTOM RAD HOSE COLD TOP HOT. ENGINE TEMP ABOUT

Did you burp the air out of the system after changing those parts? It sounds like the thermostat isn't opening which is why the lower hose is still cold. Click my screenname, go to my tips and tricks, and choose the one about burping the cooling system - it may help you out.